Joseph Pennell (American, 1860-1926). <em>Approaches to Gatun Lock</em>, 1912. Lithograph, composition: 22 7/16 x 16 3/4 in. (57 x 42.5 cm). Brooklyn Museum, Gift of William A. Putnam, 12.110 (Photo: Brooklyn Museum, 12.110_PS4.jpg)
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