| Ernest Hallen 58-I.- U.S. Marines on bridge built by them over Camacho Diversion at Bas Obispo - July 1911 1911, July Gelatin silver print George A. Smathers Libraries, University of Florida Panama Canal Museum Collection, Resource Identifier: accession number - 2001.074.001.023, System ID: PCMI006144:00001 LL/58008 This item is a work of the U.S. federal government and not protected by copyright pursuant to 17 U.S.C. §105.
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