| Umbo [Mystery of the Street] 1928 Gelatin silver print 29 x 23.5 cm (11 7/16 x 9 1/4 in) Metropolitan Museum of Art Ford Motor Company Collection, Gift of Ford Motor Company and John C. Waddell, 1987 (1987.1100.49)
Galerie Rudolf Kicken, Cologne and Phyllis Umbehr, Frankfurt/M. LL/6360
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