KEYSTONE VIEW COMPANY
Untitled (eye charts), c. 1930
ten eye chart stereographs, mounted on board
each stereograph: 3 x 6 7/8 in. (7.6 x 17.4 cm.)
overall: 40 ¾ x 9 in. (103.5 x 22.8 cm.)
KEYSTONE VIEW COMPANY
Untitled (eye charts), c. 1930
ten eye chart stereographs, mounted on board
each stereograph: 3 x 6 7/8 in. (7.6 x 17.4 cm.)
overall: 40 ¾ x 9 in. (103.5 x 22.8 cm.)
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