Historical Collegian: http://www.libraries.psu.edu/historicalcollegian/
New York Times: http://www.nytimes.com/ref/membercenter/nytarchive.html
The National Park Service: http://www.nps.gov/jofl/
The Johnstown Flood Museum: http://www.jaha.org/flood/
Explore PA History: http://www.explorepahistory.com/ExplorePAHistory/MarkerDetails.do?markerId=118
Doc Heritage: http://www.docheritage.state.pa.us/documents/johnstownflood.asp
To purchase books regarding Pennsylvania history and other related topics: http://www.psupress.org
