| Frederick DeBourg Richards Charter members of National Photographic Association in Philadelphia 1868, Summer Salted paper print 16.5 x 22.2 cm (6 1/2 x 8 3/4 ins) (image) George Eastman Museum Gift of the 3M Foundation, ex-collection Louis Walton Sipley, 1977.0377.0052 LL/70027
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