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Johnstown Flood - Wikipedia
Over 2,000 die in the Johnstown Flood | May 31, 1889 | HISTORY
Johnstown Flood National Memorial (U.S. National Park Service)
Facts about the 1889 Flood - Johnstown Area Heritage Association
How America’s Most Powerful Men Caused America’s Deadliest Flood
Johnstown flood | Disaster, Conemaugh River, Dam Failure
Johnstown flood of 1977 - Wikipedia