. 400 lb. dynamite explosion, Johnstown, Pa. Alternate Title: Johnstown and Conemaugh Valley, Pa., disaster. May 31, 1889. Coverage: 1889. Source Imprint: Rochester,  : Webster & Albee, Digital item published 8-11-2006; updated 7-22-2008. 9 400 lb. dynamite explosion, Johnstown, Pa, by Webster & Albee

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Keywords: &, ., .., 1889., coverage, imprint, rochester, source, webster