Category:NYPL Science, Industry and Business Library: General Collection

Subcategories

This category has only the following subcategory.

Media in category "NYPL Science, Industry and Business Library: General Collection"

The following 200 files are in this category, out of 1,102 total.

• 
  Ashokan Reservoir. Bishop's Falls, Esopus Creek, about 1-2 miles above Oliver Bridge dam site. Note horizontal strata of rock in creek bed (NYPL b13814376-435324).jpg 4,100 × 2,577; 1.95 MB
  
• 
  Ashokan Reservoir. Bishop's Falls, Esopus Creek, about 1-2 miles above Oliver Bridge dam site. Note horizontal strata of rock in creek bed (NYPL b13814376-435324).tiff 4,100 × 2,577; 30.23 MB
  
• 
  Ashokan Reservoir. View showing loose stone gorge in Esopus creek at site of Olive Bridge dam. Contract 3 (NYPL b13814376-435325).jpg 4,100 × 2,612; 2.15 MB
  
• 
  Ashokan Reservoir. View showing loose stone gorge in Esopus creek at site of Olive Bridge dam. Contract 3 (NYPL b13814376-435325).tiff 4,100 × 2,612; 30.64 MB
  
• 
  Ashokan Reservoir. View of village of Shokan. This lies within limits of the West basin of Ashokan reservoir. December 5, 1906 (NYPL b13814376-435326).jpg 3,995 × 2,577; 1.54 MB
  
• 
  Ashokan Reservoir. View of village of Shokan. This lies within limits of the West basin of Ashokan reservoir. December 5, 1906 (NYPL b13814376-435326).tiff 3,995 × 2,577; 29.46 MB
  
• 
  Ashokan Reservoir. View of old town of West Hurley, included in territory taken for the East basin of Ashokan resevoir. December 7, 1906 (NYPL b13814376-435327).jpg 3,995 × 2,577; 1.64 MB
  
• 
  Ashokan Reservoir. View of old town of West Hurley, included in territory taken for the East basin of Ashokan resevoir. December 7, 1906 (NYPL b13814376-435327).tiff 3,995 × 2,577; 29.46 MB
  
• 
  Ashokan Reservoir. General view up-stream from Olive Bridge dam, showing Esopus creek and reservoir basin after clearing. Note Bishop's Falls on left. Contract 72. September 9, 1913 (NYPL b13814376-435328).jpg 3,974 × 2,577; 1.73 MB
  
• 
  Ashokan Reservoir. General view up-stream from Olive Bridge dam, showing Esopus creek and reservoir basin after clearing. Note Bishop's Falls on left. Contract 72. September 9, 1913 (NYPL b13814376-435328).tiff 3,974 × 2,577; 29.3 MB
  
• 
  Ashokan Reservoir. View at site of Olive Bridge dam, showing coffer-dam and piers under construction for supporting the 8-foot pipes to carry the flow of water in Esopus creek. May 18, 1907 (NYPL b13814376-435329).jpg 3,974 × 2,548; 1.71 MB
  
• 
  Ashokan Reservoir. View at site of Olive Bridge dam, showing coffer-dam and piers under construction for supporting the 8-foot pipes to carry the flow of water in Esopus creek. May 18, 1907 (NYPL b13814376-435329).tiff 3,974 × 2,548; 28.98 MB
  
• 
  Ashokan Reservoir. View showing construction work on piers in bed of Esopus creec. These piers supported two 8-foot steel pipes. May 30, 1907 (NYPL b13814376-435330).jpg 3,974 × 2,548; 1.86 MB
  
• 
  Ashokan Reservoir. View showing construction work on piers in bed of Esopus creec. These piers supported two 8-foot steel pipes. May 30, 1907 (NYPL b13814376-435330).tiff 3,974 × 2,548; 28.98 MB
  
• 
  Ashokan Reservoir. View of Esopus creek at Olive Bridge dam site, showing coffer -dams and two lines of 8-foot steel pipes for carrying flow of creek. August 8, 1907 (NYPL b13814376-435331).jpg 3,974 × 2,548; 1.65 MB
  
• 
  Ashokan Reservoir. View of Esopus creek at Olive Bridge dam site, showing coffer -dams and two lines of 8-foot steel pipes for carrying flow of creek. August 8, 1907 (NYPL b13814376-435331).tiff 3,974 × 2,548; 28.97 MB
  
• 
  Ashokan Reservoir. Work in progress on cut-off trench under the masonry portion of Olive Bridge dam. Contract 3. September 11, 1908 (NYPL b13814376-435332).jpg 2,514 × 3,804; 1.71 MB
  
• 
  Ashokan Reservoir. Work in progress on cut-off trench under the masonry portion of Olive Bridge dam. Contract 3. September 11, 1908 (NYPL b13814376-435332).tiff 2,514 × 3,804; 27.37 MB
  
• 
  Ashokan Reservoir. Placing concrete in cut-off trench under masonry portion of Olive Bridge dam. Note grout pipes extending from concrete. Contract 3. October 3, 1908 (NYPL b13814376-435333).jpg 3,735 × 2,534; 1.75 MB
  
• 
  Ashokan Reservoir. Placing concrete in cut-off trench under masonry portion of Olive Bridge dam. Note grout pipes extending from concrete. Contract 3. October 3, 1908 (NYPL b13814376-435333).tiff 3,735 × 2,534; 27.08 MB
  
• 
  Ashokan Reservoir. Placing first concrete block on down-stream face of Olive Bridge dam. Note grouting machine at work in middle ground. Contract 3. October 18, 1908 (NYPL b13814376-435334).jpg 3,819 × 2,534; 1.69 MB
  
• 
  Ashokan Reservoir. Placing first concrete block on down-stream face of Olive Bridge dam. Note grouting machine at work in middle ground. Contract 3. October 18, 1908 (NYPL b13814376-435334).tiff 3,819 × 2,534; 27.69 MB
  
• 
  Ashokan Reservoir. View showing flooded condition of Esopus creek at site of Olive Bridge dam. Contract 3. October 27, 1908 (NYPL b13814376-435335).jpg 3,770 × 2,436; 1.67 MB
  
• 
  Ashokan Reservoir. View showing flooded condition of Esopus creek at site of Olive Bridge dam. Contract 3. October 27, 1908 (NYPL b13814376-435335).tiff 3,770 × 2,436; 26.28 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam looking up-stream, just before removal of the stream-control pipes. Contract 3. December 2, 1908 (NYPL b13814376-435336).jpg 2,448 × 3,719; 1.53 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam looking up-stream, just before removal of the stream-control pipes. Contract 3. December 2, 1908 (NYPL b13814376-435336).tiff 2,448 × 3,719; 26.05 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam just after removal of the stream-control pipes. Stream flowing through temporary conduit in dam. Contract 3. December 5, 1908 (NYPL b13814376-435337).jpg 2,508 × 3,631; 1.44 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam just after removal of the stream-control pipes. Stream flowing through temporary conduit in dam. Contract 3. December 5, 1908 (NYPL b13814376-435337).tiff 2,508 × 3,631; 26.06 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam under construction. Note cyclopean masonry in body of dam and concrete blocks on face. Contract 3. September 21, 1909 (NYPL b13814376-435338).jpg 3,742 × 2,513; 1.59 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam under construction. Note cyclopean masonry in body of dam and concrete blocks on face. Contract 3. September 21, 1909 (NYPL b13814376-435338).tiff 3,742 × 2,513; 26.91 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam showing down-stream face of masonry section. Stone crusher and concrete mixing plant in left background. Contract 3. June 21, 1910 (NYPL b13814376-435340).jpg 2,475 × 3,706; 1.65 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam showing down-stream face of masonry section. Stone crusher and concrete mixing plant in left background. Contract 3. June 21, 1910 (NYPL b13814376-435340).tiff 2,475 × 3,706; 26.25 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam showing up-stream face. Earth embankment being placed and compacted with steam roller. Contract 3. August 9, 1910 (NYPL b13814376-435341).jpg 2,435 × 3,810; 1.48 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam showing up-stream face. Earth embankment being placed and compacted with steam roller. Contract 3. August 9, 1910 (NYPL b13814376-435341).tiff 2,435 × 3,810; 26.55 MB
  
• 
  Ashokan Reservoir. View of down-stream face of Olive Bridge dam. Complete portion of dam at left. Contract 3. September 7, 1911 (NYPL b13814376-435342).jpg 3,658 × 2,478; 1.54 MB
  
• 
  Ashokan Reservoir. View of down-stream face of Olive Bridge dam. Complete portion of dam at left. Contract 3. September 7, 1911 (NYPL b13814376-435342).tiff 3,658 × 2,478; 25.94 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam from down-stream side of South wing, showing completed masonry section across Esopus creek. Contract 3. April 3, 1912 (NYPL b13814376-435343).jpg 3,658 × 2,478; 1.67 MB
  
• 
  Ashokan Reservoir. View of Olive Bridge dam from down-stream side of South wing, showing completed masonry section across Esopus creek. Contract 3. April 3, 1912 (NYPL b13814376-435343).tiff 3,658 × 2,478; 25.94 MB
  
• 
  Ashokan Reservoir. View of up-stream face of Olive Bridge dam showing forms for concreting stream-flow opening in place. Note 6-foot opening at bottom for carrying flow of Esopus creek. (NYPL b13814376-435344).jpg 3,735 × 2,478; 1.38 MB
  
• 
  Ashokan Reservoir. View of up-stream face of Olive Bridge dam showing forms for concreting stream-flow opening in place. Note 6-foot opening at bottom for carrying flow of Esopus creek. (NYPL b13814376-435344).tiff 3,735 × 2,478; 26.48 MB
  
• 
  Ashokan Reservoir. Forms for concrete plug, 26 feet thick, in stream-control conduit in Olive Bridge dam. The 6-foot opening at bottom carries the flow of Esopus creek. Contract 3. August (NYPL b13814376-435345).jpg 2,457 × 3,833; 1.56 MB
  
• 
  Ashokan Reservoir. Forms for concrete plug, 26 feet thick, in stream-control conduit in Olive Bridge dam. The 6-foot opening at bottom carries the flow of Esopus creek. Contract 3. August (NYPL b13814376-435345).tiff 2,457 × 3,833; 26.95 MB
  
• 
  Ashokan Reservoir. Down-stream face of Olive Bridge dam with concreting plant for placing plug in stream-control conduit. Contract 3. November 18, 1913 (NYPL b13814376-435346).jpg 3,763 × 2,471; 1.61 MB
  
• 
  Ashokan Reservoir. Down-stream face of Olive Bridge dam with concreting plant for placing plug in stream-control conduit. Contract 3. November 18, 1913 (NYPL b13814376-435346).tiff 3,763 × 2,471; 26.61 MB
  
• 
  Ashokan Reservoir. View showing method of depositing fine selected earth through water at the up-stream face of Olive Bridge dam. Contract 3. April 27, 1914 (NYPL b13814376-435347).jpg 3,763 × 2,471; 1.46 MB
  
• 
  Ashokan Reservoir. View showing method of depositing fine selected earth through water at the up-stream face of Olive Bridge dam. Contract 3. April 27, 1914 (NYPL b13814376-435347).tiff 3,763 × 2,471; 26.61 MB
  
• 
  Ashokan Reservoir. General view of West basin of ashokan reservoir showing Olive Bridge dam and earth wings. Note McClellan triangulation monument in right background. Contract 3. November (NYPL b13814376-435348).jpg 3,749 × 2,548; 1.52 MB
  
• 
  Ashokan Reservoir. General view of West basin of ashokan reservoir showing Olive Bridge dam and earth wings. Note McClellan triangulation monument in right background. Contract 3. November (NYPL b13814376-435348).tiff 3,749 × 2,548; 27.33 MB
  
• 
  Ashokan Reservoir. View showing construction of conduit built under the Middle dike to control the flow of the Beaver Kill. Contract 3. August 14. 1908 (NYPL b13814376-435350).jpg 3,763 × 2,492; 1.49 MB
  
• 
  Ashokan Reservoir. View showing construction of conduit built under the Middle dike to control the flow of the Beaver Kill. Contract 3. August 14. 1908 (NYPL b13814376-435350).tiff 3,763 × 2,492; 26.83 MB
  
• 
  Ashokan Reservoir. View showing concrete core-wall of North wing of Olive Bridge dam. At right, note the placing and compacting of earth embankment on the up-stream side. Contract 3. June (NYPL b13814376-435351).jpg 3,763 × 2,429; 1.51 MB
  
• 
  Ashokan Reservoir. View showing concrete core-wall of North wing of Olive Bridge dam. At right, note the placing and compacting of earth embankment on the up-stream side. Contract 3. June (NYPL b13814376-435351).tiff 3,763 × 2,429; 26.16 MB
  
• 
  Ashokan Reservoir. View showing concrete core-wall of West dike with wooden forms in place. Placing and rolling embankment at right. Contract 3. June 21, 1910 (NYPL b13814376-435352).jpg 2,429 × 3,763; 1.51 MB
  
• 
  Ashokan Reservoir. View showing concrete core-wall of West dike with wooden forms in place. Placing and rolling embankment at right. Contract 3. June 21, 1910 (NYPL b13814376-435352).tiff 2,429 × 3,763; 26.16 MB
  
• 
  Ashokan Reservoir. Dumping earth from cableway for embankment of the West dike. Core-wall with concrete forms in background. Contract 3. October 11, 1910 (NYPL b13814376-435353).jpg 2,468 × 3,679; 1.12 MB
  
• 
  Ashokan Reservoir. Dumping earth from cableway for embankment of the West dike. Core-wall with concrete forms in background. Contract 3. October 11, 1910 (NYPL b13814376-435353).tiff 2,468 × 3,679; 25.98 MB
  
• 
  Ashokan Reservoir. View showing concrete core -wall of Middle dike with earth embankment on up-stream side. Contract 3. Decenber 8, 1910 (NYPL b13814376-435354).jpg 3,679 × 2,450; 1.64 MB
  
• 
  Ashokan Reservoir. View showing concrete core -wall of Middle dike with earth embankment on up-stream side. Contract 3. Decenber 8, 1910 (NYPL b13814376-435354).tiff 3,679 × 2,450; 25.79 MB
  
• 
  Ashokan Reservoir. General view looking north-east , showing West and Middle dikes under construction. Note Ulster and Delaware Railroad tunnels through dikes at left and center of picture. (NYPL b13814376-435355).jpg 3,735 × 2,450; 1.53 MB
  
• 
  Ashokan Reservoir. General view looking north-east , showing West and Middle dikes under construction. Note Ulster and Delaware Railroad tunnels through dikes at left and center of picture. (NYPL b13814376-435355).tiff 3,735 × 2,450; 26.19 MB
  
• 
  Ashokan Reservoir. Placing paving on up-stream side of East dike. Contract 3. October 3, 1912 (NYPL b13814376-435356).jpg 3,707 × 2,450; 1.88 MB
  
• 
  Ashokan Reservoir. Placing paving on up-stream side of East dike. Contract 3. October 3, 1912 (NYPL b13814376-435356).tiff 3,707 × 2,450; 25.99 MB
  
• 
  Ashokan Reservoir. View of Woodstock dike under construction. Train on core-wall dumping material which is spread and then rolled. Contract 60. October 13, 1910 (NYPL b13814376-435357).jpg 3,707 × 2,450; 1.57 MB
  
• 
  Ashokan Reservoir. View of Woodstock dike under construction. Train on core-wall dumping material which is spread and then rolled. Contract 60. October 13, 1910 (NYPL b13814376-435357).tiff 3,707 × 2,450; 25.99 MB
  
• 
  Ashokan Reservoir. View showing down-stream side of Glenford dike on top of which is located the relocated Ulster and Delaware Railroad tracks. Contract 60. April 28, 1914 (NYPL b13814376-435358).jpg 3,826 × 2,450; 1.71 MB
  
• 
  Ashokan Reservoir. View showing down-stream side of Glenford dike on top of which is located the relocated Ulster and Delaware Railroad tracks. Contract 60. April 28, 1914 (NYPL b13814376-435358).tiff 3,826 × 2,450; 26.82 MB
  
• 
  Ashokan Reservoir. View of Glenford dike showing relocated Ulster and Delaware railroad and water in East basin of reservoir. Contract 60. June 25, 1916 (NYPL b13814376-435359).jpg 3,700 × 2,415; 1.41 MB
  
• 
  Ashokan Reservoir. View of Glenford dike showing relocated Ulster and Delaware railroad and water in East basin of reservoir. Contract 60. June 25, 1916 (NYPL b13814376-435359).tiff 3,700 × 2,415; 25.57 MB
  
• 
  Ashokan Reservoir. View of Waste weir and concrete-paved Spillway. Waste water is carried through channel to Esopus creek, two miles below Olive Bridge dam. Contract 3. June 18, 1912 (NYPL b13814376-435360).jpg 3,756 × 2,415; 1.53 MB
  
• 
  Ashokan Reservoir. View of Waste weir and concrete-paved Spillway. Waste water is carried through channel to Esopus creek, two miles below Olive Bridge dam. Contract 3. June 18, 1912 (NYPL b13814376-435360).tiff 3,756 × 2,415; 25.96 MB
  
• 
  Ashokan Reservoir. Waste weir and Spillway from Ashokan reservoir. Spillway bridge (Contract 111) with clear span of 175 feet and rise of 25 feet. Contract 3. August 5, 1914 (NYPL b13814376-435361).jpg 3,756 × 2,443; 1.27 MB
  
• 
  Ashokan Reservoir. Waste weir and Spillway from Ashokan reservoir. Spillway bridge (Contract 111) with clear span of 175 feet and rise of 25 feet. Contract 3. August 5, 1914 (NYPL b13814376-435361).tiff 3,756 × 2,443; 26.26 MB
  
• 
  Ashokan Reservoir. Waste weir and upper end of Spillway leading to Esopus creek. Spillway bridge in background. Contract 3. December 13, 1916 (NYPL b13814376-435362).jpg 3,805 × 2,408; 1.38 MB
  
• 
  Ashokan Reservoir. Waste weir and upper end of Spillway leading to Esopus creek. Spillway bridge in background. Contract 3. December 13, 1916 (NYPL b13814376-435362).tiff 3,805 × 2,408; 26.22 MB
  
• 
  Ashokan Reservoir. View showing excavation for pressure aqueducts to convey the water to the Lower gate -chamber. Contract 3. July 19, 1910 (NYPL b13814376-435363).jpg 2,408 × 3,735; 1.51 MB
  
• 
  Ashokan Reservoir. View showing excavation for pressure aqueducts to convey the water to the Lower gate -chamber. Contract 3. July 19, 1910 (NYPL b13814376-435363).tiff 2,408 × 3,735; 25.74 MB
  
• 
  Ashokan Reservoir. Uppper gate-chamber from East Inlet channel. Upper and Lower pressure aqueducts for drawing water from reservoir under Dividing Weir dike; 60-inch gate -valves in place. (NYPL b13814376-435364).jpg 3,693 × 2,429; 1.75 MB
  
• 
  Ashokan Reservoir. Uppper gate-chamber from East Inlet channel. Upper and Lower pressure aqueducts for drawing water from reservoir under Dividing Weir dike; 60-inch gate -valves in place. (NYPL b13814376-435364).tiff 3,693 × 2,429; 25.67 MB
  
• 
  Ashokan Reservoir. View of Uppper gate-chamber from West Inlet channel showing wood and steel racks in place. Contracts 3 and 91. September 25, 1913 (NYPL b13814376-435365).jpg 2,415 × 3,798; 1.58 MB
  
• 
  Ashokan Reservoir. View of Uppper gate-chamber from West Inlet channel showing wood and steel racks in place. Contracts 3 and 91. September 25, 1913 (NYPL b13814376-435365).tiff 2,415 × 3,798; 26.25 MB
  
• 
  Catskill Aqueduct Headworks. Lower gate-chamber showing terminal of Pressure aqueducts; 48-inch control valves and 60- inch gate valves in place. Manifold valves at right lead to aeration (NYPL b13814376-435366).jpg 3,763 × 2,457; 1.81 MB
  
• 
  Catskill Aqueduct Headworks. Lower gate-chamber showing terminal of Pressure aqueducts; 48-inch control valves and 60- inch gate valves in place. Manifold valves at right lead to aeration (NYPL b13814376-435366).tiff 3,763 × 2,457; 26.46 MB
  
• 
  Catskill Aqueduct Headworks. Placing concrete forms for connections between Lower Pressure aqueduct and 48-inch control valves. Intake castings from Upper Pressure aqueduct to 48-control (NYPL b13814376-435367).jpg 3,763 × 2,401; 1.38 MB
  
• 
  Catskill Aqueduct Headworks. Placing concrete forms for connections between Lower Pressure aqueduct and 48-inch control valves. Intake castings from Upper Pressure aqueduct to 48-control (NYPL b13814376-435367).tiff 3,763 × 2,401; 25.85 MB
  
• 
  Catskill Aqueduct Headworks. View of Screen chamber looking towards Lower gate-chamber. Contract 10. September 19, 1913 (NYPL b13814376-435368).jpg 3,749 × 2,450; 1.28 MB
  
• 
  Catskill Aqueduct Headworks. View of Screen chamber looking towards Lower gate-chamber. Contract 10. September 19, 1913 (NYPL b13814376-435368).tiff 3,749 × 2,450; 26.28 MB
  
• 
  Catskill Aqueduct Headworks. Lower Special aqueduct showing connection to Lower gate-chamber at left and Waste channel at right. Overflow weir in center. Contract 10. September 25, 1913 (NYPL b13814376-435369).jpg 3,763 × 2,443; 1.44 MB
  
• 
  Catskill Aqueduct Headworks. Lower Special aqueduct showing connection to Lower gate-chamber at left and Waste channel at right. Overflow weir in center. Contract 10. September 25, 1913 (NYPL b13814376-435369).tiff 3,763 × 2,443; 26.31 MB
  
• 
  Catskill Aqueduct Headworks. Looking up-stream from end of covered portion of Waste channel. Screen chamber can be emptied through opening at left. In center is 3-foot drain for (NYPL b13814376-435370).jpg 3,763 × 2,443; 1.32 MB
  
• 
  Catskill Aqueduct Headworks. Looking up-stream from end of covered portion of Waste channel. Screen chamber can be emptied through opening at left. In center is 3-foot drain for (NYPL b13814376-435370).tiff 3,763 × 2,443; 26.31 MB
  
• 
  Ashokan reservoir. View showing construction of Dividing weir with gate-house in foreground.l Note four 5-foot by 15-foot sluice-gates in place. Contract 3. July 8, 1913 (NYPL b13814376-435371).jpg 3,763 × 2,429; 1.68 MB
  
• 
  Ashokan reservoir. View showing construction of Dividing weir with gate-house in foreground.l Note four 5-foot by 15-foot sluice-gates in place. Contract 3. July 8, 1913 (NYPL b13814376-435371).tiff 3,763 × 2,429; 26.16 MB
  
• 
  Ashokan reservoir. Inlet from West basin to Dividing Weir gate-house. Falsework for two arches of Ashokan bridge in place. Contracts 3 and 76. October 26, 1914 (NYPL b13814376-435372).jpg 3,763 × 2,429; 1.62 MB
  
• 
  Ashokan reservoir. Inlet from West basin to Dividing Weir gate-house. Falsework for two arches of Ashokan bridge in place. Contracts 3 and 76. October 26, 1914 (NYPL b13814376-435372).tiff 3,763 × 2,429; 26.16 MB
  
• 
  Ashokan reservoir. Dividing weir with foundation piers for Ashokan bridge. West basin and Winchell hill at right and Discharge channel to East basin at left. Contract 3. October 26, 1914 (NYPL b13814376-435373).jpg 3,763 × 2,429; 1.48 MB
  
• 
  Ashokan reservoir. Dividing weir with foundation piers for Ashokan bridge. West basin and Winchell hill at right and Discharge channel to East basin at left. Contract 3. October 26, 1914 (NYPL b13814376-435373).tiff 3,763 × 2,429; 26.16 MB
  
• 
  Superstructures. View of Lower gate-chamber superstructure of concrete-stone, at Ashokan reservoir. Note reinforced-concrete roof tiles. Beaver Kill dikes in background. Contracts 124 and (NYPL b13814376-435374).jpg 3,728 × 2,443; 1.2 MB
  
• 
  Superstructures. View of Lower gate-chamber superstructure of concrete-stone, at Ashokan reservoir. Note reinforced-concrete roof tiles. Beaver Kill dikes in background. Contracts 124 and (NYPL b13814376-435374).tiff 3,728 × 2,443; 26.06 MB
  
• 
  Ashokan Lower gate-chamber, with electrically-driven valves, vertical genartor operated by water turbine and overhead traveling crane. Contracts 31, 42, 43 and 56. August 31, 1917 (NYPL b13814376-435375).jpg 3,742 × 2,443; 1.47 MB
  
• 
  Ashokan Lower gate-chamber, with electrically-driven valves, vertical genartor operated by water turbine and overhead traveling crane. Contracts 31, 42, 43 and 56. August 31, 1917 (NYPL b13814376-435375).tiff 3,742 × 2,443; 26.16 MB
  
• 
  Kensico reservoir. View of old Kensico dam and portion of reservoir before construction opertions began. Contract 9. October 16, 1908 (NYPL b13814376-435376).jpg 3,777 × 2,443; 1.14 MB
  
• 
  Kensico reservoir. View of old Kensico dam and portion of reservoir before construction opertions began. Contract 9. October 16, 1908 (NYPL b13814376-435376).tiff 3,777 × 2,443; 26.4 MB
  
• 
  Kensico reservoir. View showning excavation of old Kensico dam in progress. Contract 9. October 13, 1911 (NYPL b13814376-435377).jpg 3,777 × 2,443; 1.42 MB
  
• 
  Kensico reservoir. View showning excavation of old Kensico dam in progress. Contract 9. October 13, 1911 (NYPL b13814376-435377).tiff 3,777 × 2,443; 26.4 MB
  
• 
  Kensico reservoir. View showing excavation for foundation of Kensico dam in progress. Note wooden flume for controlling water of Bronx river. Contract 9. July 30, 1912 (NYPL b13814376-435378).jpg 3,749 × 2,443; 1.71 MB
  
• 
  Kensico reservoir. View showing excavation for foundation of Kensico dam in progress. Note wooden flume for controlling water of Bronx river. Contract 9. July 30, 1912 (NYPL b13814376-435378).tiff 3,749 × 2,443; 26.21 MB
  
• 
  Kensico reservoir. General view of excavation and foundation for Kensico dam. Cut-off trench being excavated at right. Contract 9. December 31, 1912 (NYPL b13814376-435379).jpg 3,749 × 2,443; 1.44 MB
  
• 
  Kensico reservoir. General view of excavation and foundation for Kensico dam. Cut-off trench being excavated at right. Contract 9. December 31, 1912 (NYPL b13814376-435379).tiff 3,749 × 2,443; 26.21 MB
  
• 
  Kensico reservoir. General view of foundation and cut-off trench for Kensico dam and contractor's plant. Old dam at right of center and flume for controlling water of Bronx river. Contract (NYPL b13814376-435380).jpg 3,714 × 2,443; 1.9 MB
  
• 
  Kensico reservoir. General view of foundation and cut-off trench for Kensico dam and contractor's plant. Old dam at right of center and flume for controlling water of Bronx river. Contract (NYPL b13814376-435380).tiff 3,714 × 2,443; 25.96 MB
  
• 
  Kensico reservoir. View showing excavated V-shaped gorge at east end of dam foundation. Contract 9. March 28, 1913 (NYPL b13814376-435381).jpg 3,714 × 2,443; 1.66 MB
  
• 
  Kensico reservoir. View showing excavated V-shaped gorge at east end of dam foundation. Contract 9. March 28, 1913 (NYPL b13814376-435381).tiff 3,714 × 2,443; 25.96 MB
  
• 
  Kensico reservoir. View of down-stream face of dam showing method of placing concrete with travelling derricks. Contract 9. October 30, 1913 (NYPL b13814376-435382).jpg 3,623 × 2,450; 1.59 MB
  
• 
  Kensico reservoir. View of down-stream face of dam showing method of placing concrete with travelling derricks. Contract 9. October 30, 1913 (NYPL b13814376-435382).tiff 3,623 × 2,450; 25.4 MB
  
• 
  Kensico reservoir. Valves and piping and concrete forms for blow-off in the Lower gate-chamber beneath the Terrace of Kensico dam. Contract 9. March 30, 1914 (NYPL b13814376-435383).jpg 3,623 × 2,450; 1.41 MB
  
• 
  Kensico reservoir. Valves and piping and concrete forms for blow-off in the Lower gate-chamber beneath the Terrace of Kensico dam. Contract 9. March 30, 1914 (NYPL b13814376-435383).tiff 3,623 × 2,450; 25.4 MB
  
• 
  Kensico reservoir. View of up-stream face of dam. Derricks handle all masonry; cableways move derricks and other articles of plant. Contract 9. May 28, 1914 (NYPL b13814376-435384).jpg 3,714 × 2,450; 1.73 MB
  
• 
  Kensico reservoir. View of up-stream face of dam. Derricks handle all masonry; cableways move derricks and other articles of plant. Contract 9. May 28, 1914 (NYPL b13814376-435384).tiff 3,714 × 2,450; 26.04 MB
  
• 
  Kensico reservoir. Travelling stiff-leg derricks for handling masonry for the dam. Tracks supported by blocks forming facing of expansion joints. Contract 9. July 23, 1914 (NYPL b13814376-435385).jpg 2,450 × 3,714; 1.77 MB
  
• 
  Kensico reservoir. Travelling stiff-leg derricks for handling masonry for the dam. Tracks supported by blocks forming facing of expansion joints. Contract 9. July 23, 1914 (NYPL b13814376-435385).tiff 2,450 × 3,714; 26.04 MB
  
• 
  Kensico reservoir. View showing expansion-joints of Kensico dam spaced abour 79 feet apart. Note cut-off trench in right foreground with drainage gallery above. Contract 9. September 9, 1914 (NYPL b13814376-435386).tiff 2,448 × 3,692; 25.86 MB
  
• 
  Kensico reservoir. View showing expansion-joints of Kensico dam spaced abour 79 feet apart. Note cut-off trench in right foreground with drainage gallery above. Contract 9. September 9, 1914 (NYPL b13814376-435386).jpg 2,448 × 3,692; 1.67 MB
  
• 
  Kensico reservoir. View of dam showing expansion-joint in foreground and down-stream face stepped to receive granite facing. Contract 9. October 29, 1914 (NYPL b13814376-435387).jpg 3,693 × 2,450; 1.7 MB
  
• 
  Kensico reservoir. View of dam showing expansion-joint in foreground and down-stream face stepped to receive granite facing. Contract 9. October 29, 1914 (NYPL b13814376-435387).tiff 3,693 × 2,450; 25.89 MB
  
• 
  Kensico reservoir. Placing granite facing on the down-stream face of the dam. Bands of rusticated stone at the expansion-joints in dam. Contract 9. August 12, 1915 (NYPL b13814376-435388).jpg 3,693 × 2,450; 1.6 MB
  
• 
  Kensico reservoir. Placing granite facing on the down-stream face of the dam. Bands of rusticated stone at the expansion-joints in dam. Contract 9. August 12, 1915 (NYPL b13814376-435388).tiff 3,693 × 2,450; 25.89 MB
  
• 
  Kensico reservoir. General view of Kensico dam looking west. Contract 9. May 4, 1916 (NYPL b13814376-435389).jpg 3,693 × 2,429; 1.71 MB
  
• 
  Kensico reservoir. General view of Kensico dam looking west. Contract 9. May 4, 1916 (NYPL b13814376-435389).tiff 3,693 × 2,429; 25.67 MB
  
• 
  Kensico reservoir. View from Upper West pavilion showing completed East pavilion, Terrace wall and paving, Lower pavilions, main pool and driveways.Contract 9. January 4, 1917 (NYPL b13814376-435390).jpg 3,609 × 2,436; 1.34 MB
  
• 
  Kensico reservoir. View from Upper West pavilion showing completed East pavilion, Terrace wall and paving, Lower pavilions, main pool and driveways.Contract 9. January 4, 1917 (NYPL b13814376-435390).tiff 3,609 × 2,436; 25.16 MB
  
• 
  Kensico reservoir. General view of Kensico dam and reservoir with pool and fountain below dam. Lower Effluent chamber in background. Contract 9. October 25, 1917 (NYPL b13814376-435391).jpg 3,609 × 2,436; 1.29 MB
  
• 
  Kensico reservoir. General view of Kensico dam and reservoir with pool and fountain below dam. Lower Effluent chamber in background. Contract 9. October 25, 1917 (NYPL b13814376-435391).tiff 3,609 × 2,436; 25.16 MB
  
• 
  Kensico reservoir. East pylon, fountain and cascade basin, showing architectural details. Note arrangement of granite facing. Contract 9. September 20, 1917 (NYPL b13814376-435392).jpg 2,436 × 3,609; 1.49 MB
  
• 
  Kensico reservoir. East pylon, fountain and cascade basin, showing architectural details. Note arrangement of granite facing. Contract 9. September 20, 1917 (NYPL b13814376-435392).tiff 2,436 × 3,609; 25.16 MB
  
• 
  Kensico Influent Weir. Completed Influent weir and partially completed Influent chamber. Water flowing over weir into Knsico reservoir. Contract 55. December 6, 1915 (NYPL b13814376-435393).jpg 3,609 × 2,436; 1.36 MB
  
• 
  Kensico Influent Weir. Completed Influent weir and partially completed Influent chamber. Water flowing over weir into Knsico reservoir. Contract 55. December 6, 1915 (NYPL b13814376-435393).tiff 3,609 × 2,436; 25.16 MB
  
• 
  Kensico Influent Weir. View of Influent weir and chamber. To divert water from reservoir the gates in the chamber are opened and water flows into Kensico by-pass. Contract 55, September 20, (NYPL b13814376-435394).jpg 3,721 × 2,450; 1.35 MB
  
• 
  Kensico Influent Weir. View of Influent weir and chamber. To divert water from reservoir the gates in the chamber are opened and water flows into Kensico by-pass. Contract 55, September 20, (NYPL b13814376-435394).tiff 3,721 × 2,450; 26.09 MB
  
• 
  Kensico reservoir. View showing Waste weir and foot bridge over Waste channel. Contract 9. August 12, 1915 (NYPL b13814376-435395).jpg 3,721 × 2,387; 1.54 MB
  
• 
  Kensico reservoir. View showing Waste weir and foot bridge over Waste channel. Contract 9. August 12, 1915 (NYPL b13814376-435395).tiff 3,721 × 2,387; 25.42 MB
  
• 
  Kensico By-pass Aqueduct. ... Contract 55. November 22, 1910 (NYPL b13814376-435396).jpg 2,422 × 3,686; 1.55 MB
  
• 
  Kensico By-pass Aqueduct. ... Contract 55. November 22, 1910 (NYPL b13814376-435396).tiff 2,422 × 3,686; 25.55 MB
  
• 
  Kensico Screen chamber. ... Contract 55. December 13, 1911 (NYPL b13814376-435397).jpg 3,707 × 2,422; 1.36 MB
  
• 
  Kensico Screen chamber. ... Contract 55. December 13, 1911 (NYPL b13814376-435397).tiff 3,707 × 2,422; 25.69 MB
  
• 
  Kensico Screen chamber. .View of finished interior looking through chamber, ... Contract 55. January 29, 1914 (NYPL b13814376-435398).jpg 3,574 × 2,408; 1.2 MB
  
• 
  Kensico Screen chamber. .View of finished interior looking through chamber, ... Contract 55. January 29, 1914 (NYPL b13814376-435398).tiff 3,574 × 2,408; 24.63 MB
  
• 
  Hill View Reservoir. Spreading and rolling earth to form special impervious enbankments. Contract 30. July 1, 1910 (NYPL b13814376-435399).jpg 3,574 × 2,408; 1.52 MB
  
• 
  Hill View Reservoir. Spreading and rolling earth to form special impervious enbankments. Contract 30. July 1, 1910 (NYPL b13814376-435399).tiff 3,574 × 2,408; 24.63 MB
  
• 
  Hill View Reservoir. Placing concrete lining on embankment slopes. .... Contract 30. May 6, 1915 (NYPL b13814376-435400).jpg 3,574 × 2,408; 1.59 MB
  
• 
  Hill View Reservoir. Placing concrete lining on embankment slopes. .... Contract 30. May 6, 1915 (NYPL b13814376-435400).tiff 3,574 × 2,408; 24.63 MB
  
• 
  Hill View reservoir. Placing 6-inch concrete lining on reservoir bottom of East basin. ... Contract 30. June 25, 1914 (NYPL b13814376-435401).jpg 3,630 × 2,408; 1.26 MB
  
• 
  Hill View reservoir. Placing 6-inch concrete lining on reservoir bottom of East basin. ... Contract 30. June 25, 1914 (NYPL b13814376-435401).tiff 3,630 × 2,408; 25.01 MB
  
• 
  Hill View reservoir. Uptake chamber and completed reservoir embankment showing concrete lining with dry-rubble masonry above, followed by top course of riprap. Contrac 30. May 12, 1915 (NYPL b13814376-435402).jpg 3,567 × 2,408; 1.27 MB
  
• 
  Hill View reservoir. Uptake chamber and completed reservoir embankment showing concrete lining with dry-rubble masonry above, followed by top course of riprap. Contrac 30. May 12, 1915 (NYPL b13814376-435402).tiff 3,567 × 2,408; 24.58 MB
  
• 
  Hill View reservoir. Downtake chamber showing sluice-gates in place for controlling flow of water to Downtake shaft in center. ... Contract 30. August 8, 1913 (NYPL b13814376-435403).jpg 3,567 × 2,408; 1.46 MB
  
• 
  Hill View reservoir. Downtake chamber showing sluice-gates in place for controlling flow of water to Downtake shaft in center. ... Contract 30. August 8, 1913 (NYPL b13814376-435403).tiff 3,567 × 2,408; 24.58 MB
  
• 
  Silver Lake reservoir. Panorama view of Silver Lake before construction operations began. Contract 89. November 5, 1913 (NYPL b13814376-435404).jpg 3,567 × 2,408; 1.43 MB
  
• 
  Silver Lake reservoir. Panorama view of Silver Lake before construction operations began. Contract 89. November 5, 1913 (NYPL b13814376-435404).tiff 3,567 × 2,408; 24.58 MB
  
• 
  Silver Lake reservoir. View showing method of building earth dikes. ... Contract 89. May 14, 1914 (NYPL b13814376-435405).jpg 3,567 × 2,380; 1.39 MB
  
• 
  Silver Lake reservoir. View showing method of building earth dikes. ... Contract 89. May 14, 1914 (NYPL b13814376-435405).tiff 3,567 × 2,380; 24.29 MB
  
• 
  Silver Lake reservoir. View of Gate-chamber in Middle dike showing walls partly comleted and pipes and special castings in place. Contract 89. October 15, 1914 (NYPL b13814376-435406).jpg 3,517 × 2,422; 1.28 MB
  
• 
  Silver Lake reservoir. View of Gate-chamber in Middle dike showing walls partly comleted and pipes and special castings in place. Contract 89. October 15, 1914 (NYPL b13814376-435406).tiff 3,517 × 2,422; 24.38 MB
  
• 
  Silver Lake reservoir. South Inlet channel lined with concrete looking towards gate-chamber in Middle dike. Contract 89. November 4, 1915 (NYPL b13814376-435407).jpg 3,546 × 2,422; 1.16 MB
  
• 
  Silver Lake reservoir. South Inlet channel lined with concrete looking towards gate-chamber in Middle dike. Contract 89. November 4, 1915 (NYPL b13814376-435407).tiff 3,546 × 2,422; 24.58 MB
  
• 
  Silver Lake reservoir and Richmond conduit. ... Contract 89. December 9, 1913 (NYPL b13814376-435408).jpg 2,422 × 3,546; 1.59 MB
  
• 
  Silver Lake reservoir and Richmond conduit. ... Contract 89. December 9, 1913 (NYPL b13814376-435408).tiff 2,422 × 3,546; 24.58 MB
  
• 
  Silver Lake reservoir. View showing Middle Dike roadway, parapets and gate-chambers. South basin in foreground. Contract 89 and 144. October 2, 1917 (NYPL b13814376-435409).jpg 3,546 × 2,394; 1.15 MB
  
• 
  Silver Lake reservoir. View showing Middle Dike roadway, parapets and gate-chambers. South basin in foreground. Contract 89 and 144. October 2, 1917 (NYPL b13814376-435409).tiff 3,546 × 2,394; 24.29 MB
  
• 
  Silver Lake reservoir. View of reservoir showing North and South basins. ... Contract 89. September 22, 1917 (NYPL b13814376-435410).jpg 3,503 × 2,394; 1.52 MB
  
• 
  Silver Lake reservoir. View of reservoir showing North and South basins. ... Contract 89. September 22, 1917 (NYPL b13814376-435410).tiff 3,503 × 2,394; 24 MB
  
• 
  Fences. Typical fence along City's right-of-way. ... Contract 101. September 8, 1913 (NYPL b13814376-435411).jpg 2,372 × 1,847; 1.01 MB
  
• 
  Fences. Typical fence along City's right-of-way. ... Contract 101. September 8, 1913 (NYPL b13814376-435411).tiff 3,503 × 2,373; 23.79 MB
  
• 
  Fences. Typical fence along City's right-of-way. ... Contract 101. September 8, 1913 (NYPL b13814376-435412).jpg 3,503 × 2,373; 1.52 MB
  
• 
  Fences. Typical fence along City's right-of-way. ... Contract 101. September 8, 1913 (NYPL b13814376-435412).tiff 3,503 × 2,373; 23.79 MB
  
• 
  Fences. Reinforced-concrete posts and metal gates on double right-of-way across St. Elmo cut-and-cover aqueduct. Contract 17. May 27, 1913 (NYPL b13814376-435413).jpg 3,553 × 2,373; 1.35 MB
  
• 
  Fences. Reinforced-concrete posts and metal gates on double right-of-way across St. Elmo cut-and-cover aqueduct. Contract 17. May 27, 1913 (NYPL b13814376-435413).tiff 3,553 × 2,373; 24.13 MB
  
• 
  Fences. Typical fence along City's taking line at Hill View reservoir. ... Contract 30. January 24, 1916 (NYPL b13814376-435414).jpg 3,574 × 2,373; 1.37 MB
  
• 
  Fences. Typical fence along City's taking line at Hill View reservoir. ... Contract 30. January 24, 1916 (NYPL b13814376-435414).tiff 3,574 × 2,373; 24.27 MB
  
• 
  Stone boubdary walls. ... Contract 11. October 20, 1909 (NYPL b13814376-435415).jpg 3,574 × 2,373; 1.38 MB
  
• 
  Stone boubdary walls. ... Contract 11. October 20, 1909 (NYPL b13814376-435415).tiff 3,574 × 2,373; 24.27 MB
  
• 
  Fences. Fence along Ashokan highways. ... Contract 143. September 25, 1915 (NYPL b13814376-435416).jpg 3,574 × 2,401; 1.28 MB
  
• 
  Fences. Fence along Ashokan highways. ... Contract 143. September 25, 1915 (NYPL b13814376-435416).tiff 3,574 × 2,401; 24.56 MB
  
• 
  Fences. Fence along Ashokan highways. ... Contract 143. November 2, 1916 (NYPL b13814376-435417).jpg 3,595 × 2,401; 1.17 MB
  
• 
  Fences. Fence along Ashokan highways. ... Contract 143. November 2, 1916 (NYPL b13814376-435417).tiff 3,595 × 2,401; 24.7 MB
  
• 
  Breakneck cut-and-cover. Typical of country traversed in Putnam County. Contract 22. November 5, 1909 (NYPL b13814376-435418).jpg 3,595 × 2,401; 1.89 MB
  
• 
  Breakneck cut-and-cover. Typical of country traversed in Putnam County. Contract 22. November 5, 1909 (NYPL b13814376-435418).tiff 3,595 × 2,401; 24.7 MB
  
• 
  Grassy Sprain Cut-and-cover. Preliminary clearing before excavation. Contract 53. June 3, 1910 (NYPL b13814376-435419).jpg 3,574 × 2,380; 1.64 MB
  
• 
  Grassy Sprain Cut-and-cover. Preliminary clearing before excavation. Contract 53. June 3, 1910 (NYPL b13814376-435419).tiff 3,574 × 2,380; 24.34 MB
  
• 
  Esopus cut-and-cover. ... Contract 11. April 7, 1909 (NYPL b13814376-435420).jpg 3,574 × 2,401; 1.56 MB
  
• 
  Esopus cut-and-cover. ... Contract 11. April 7, 1909 (NYPL b13814376-435420).tiff 3,574 × 2,401; 24.56 MB
  
• 
  Peekskill cut-and-cover. ... Contract 2. June 9, 1910 (NYPL b13814376-435421).jpg 2,401 × 3,574; 1.48 MB
  
• 
  Peekskill cut-and-cover. ... Contract 2. June 9, 1910 (NYPL b13814376-435421).tiff 2,401 × 3,574; 24.56 MB
  
• 
  Pleasantville cut-and-cover. ... Contract 55. July 7, 1910 (NYPL b13814376-435422).jpg 2,409 × 3,561; 1.46 MB
  
• 
  Pleasantville cut-and-cover. ... Contract 55. July 7, 1910 (NYPL b13814376-435422).tiff 2,409 × 3,561; 24.55 MB
  
• 
  Wallkill cut-and-cover. ... Contract 47. July 21, 1910 (NYPL b13814376-435423).jpg 3,560 × 2,408; 1.64 MB
  
• 
  Wallkill cut-and-cover. ... Contract 47. July 21, 1910 (NYPL b13814376-435423).tiff 3,560 × 2,408; 24.53 MB
  
• 
  Millwood North cut-and-cover. ... Contract 25. June 7, 1910 (NYPL b13814376-435424).jpg 2,408 × 3,651; 1.71 MB
  
• 
  Millwood North cut-and-cover. ... Contract 25. June 7, 1910 (NYPL b13814376-435424).tiff 2,408 × 3,651; 25.16 MB
  
• 
  Esopus cut-and-cover. ... Contract 11. July 21, 1909 (NYPL b13814376-435425).jpg 3,651 × 2,408; 1.38 MB
  
• 
  Esopus cut-and-cover. ... Contract 11. July 21, 1909 (NYPL b13814376-435425).tiff 3,651 × 2,408; 25.16 MB