Doo Dah Days web site: http://doodahdays.com/
Historic Pittsburgh web site: http://historicpittsburgh.org/
Heinz History Center web site: http://www.heinzhistorycenter.org/history-center/
Historical Society of Pennsylvania web site: https://hsp.org/
Archives Service Center_University of Pittsburgh web site: http://www.library.pitt.edu/archives-special-collections
Allegheny County Bridges and Tunnels web site: http://pghbridges.com/
Allegheny County Real Estate web site: http://www.alleghenycounty.us/real-estate/index.aspx
Allegheny County Tombstones & More web site: http://freepages.genealogy.rootsweb.ancestry.com/~njm1/tombs.htm
Find a Grave web site: https://www.findagrave.com/
Pennsylvania Genealogy site: http://www.pennsylvaniagenealogy.net/
PSU_Western PA History Magazine back issues web site: https://journals.psu.edu/wph
PSU_Penn Pilot_PA Aerial Photos web site: http://www.pennpilot.psu.edu/
PSU_Sanborn Maps web site: https://libraries.psu.edu/about/collections/sanborn-fire-insurance-maps
Retrographer_Pittsburgh Photo History web site: http://retrographer.org/
East Liberty Historical Society web site: http://www.eastlibertychamber.org/History-of-East-Liberty
Oakmont Historical Society web site: http://www.oakmonthistoricalsociety.org/
Squirrel Hill Historical Society web site: http://www.squirrelhillhistory.org/