| Ernest Walter Histed (1862-1947, Pittsburgh, PA.) Pontoon bridge across Conemaugh river, Johnstown Flood, May 31st, 1889 [Johnstown Flood, May 31st, 1990.] 1899 (ca) Photograph, on printed mount Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-ppmsca-17544 (digital file from original photo) LC-USZ62-79364 (b&w film copy neg.), Call Number: LOT 2564, no. 10 [item] [P&P] LL/102143
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