File:Arnold (1913) pg 234 - Perspective sketch of Eureka Valley (cropped).jpg

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English: Figure 54 - Perspective sketch of Eureka Valley. Showing Market Street extension and relative position of Eureka Valley station and Mission-Sunset tunnel. Also indicating the impossibility of extending Market Street straight across Eureka Valley if an outlet is desired. This secures easy grade for both tunnel and street.
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Source Arnold, Bion J. (March 1913) "11. Market Street extension tunnel under Twin Peaks" in Report on the Improvement and Development of the Transportation Facilities of San Francisco, pp. 225–270 Retrieved on 17 April 2018.
Author Uncredited illustrator(s), drafter(s), and photographer(s). First published by and generally credited to Bion Arnold
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Arnold_(1913)_pg_234_-_Perspective_sketch_of_Eureka_Valley_(cropped).jpg

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current15:11, 27 July 2018Thumbnail for version as of 15:11, 27 July 20181,034 × 1,526 (301 KB)Mliu92 (talk | contribs)File:Arnold (1913) pg 234 - Perspective sketch of Eureka Valley.jpg cropped 21 % horizontally, 31 % vertically using CropTool with precise mode.

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