| Ernest Hallen 19-C Immediately After Explosion - Bas Obispo Cut - September 19th, 1907. 1907, 19 September Gelatin silver print George A. Smathers Libraries, University of Florida Panama Canal Museum Collection, Resource Identifier: accession number - 2003.017.015.004, System ID: PCMI008053:00001 LL/58000 All applicable rights reserved by the source institution and holding location.
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