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Bradley & Rulofson
[A view of the interior of the studio of Bradley & Rulofson in San Francisco]
Internet - Original source ill-defined
Image scanned from the book "Photography and the American Scene: A Social History, 1839-1889" by Robert Taft, published by Macmillan Company, 1938."
(Alan Griffiths, 5 October 2020) I'm indebted to Russell Potter for bringing this illustration to my attention.