Gaines, James (September 2007). "Washington & Lafayette". Smithsonian Magazine Online. Smithsonian. Archived from the original on April 3, 2012. Retrieved October 21, 2008.
state.pa.us
portal.state.pa.us
"PHMC Historical Markers Search". Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. Archived from the original(Searchable database) on March 21, 2016. Retrieved January 25, 2014.
"PHMC Historical Markers Search". Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. Archived from the original(Searchable database) on March 21, 2016. Retrieved January 25, 2014.
Gaines, James (September 2007). "Washington & Lafayette". Smithsonian Magazine Online. Smithsonian. Archived from the original on April 3, 2012. Retrieved October 21, 2008.