| Helmut Gernsheim Book cover for A revised and enlarged 1969 edition of "The History of Photography: From the Camera Obscura to the Beginning of the Modern Era" by Helmut Gernsheim in collaboration with Alison Gernsheim. 1969 Book cover Harry Ransom Humanities Research Center at the University of Texas at Austin LL/39143 Originally published by the Oxford University Press in 1955.
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