| Harry Callahan Cape Cod 1972 Silver print 7 x 7 ins (17.8 x 17.8 cm) Swann Galleries - New York Courtesy of Swann Galleries (Auction, "Important Photograms & Photobooks", Dec 9, 2010, #2233, Lot 133) LL/42106 With Callahan's signature, in pencil, on recto and verso.
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