| Unidentified photographer/creator A Very Simple Dark-Tent 1872 Magazine page Google Books LL/34925 Dr. H. Vogel "A Very Simple Dark-Tent", The Photographic World, 1872, Vol.11, Part 1, No.13, p.25-26, Fig.2.
The over complex article ends with the wonderful line:
"I may mention that the tent itself is a much more simple affair than the description of it.>"
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