Isaac Roberts

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  Public domain photo of the Great Andromeda Nebula. From A Selection of Photographs of Stars, Star-clusters and Nebulae, Volume II, The Universal Press, London, 1899
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  Public domain photo of the Triangulum spiral nebula, M33. From A Selection of Photographs of Stars, Star-clusters and Nebulae, Volume II, The Universal Press, London, 1899.
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  Public domain photo of the Veil Nebula in Cygnus. From A Selection of Photographs of Stars, Star-clusters and Nebulae, Volume II, The Universal Press, London, 1899