Addison Township, Somerset County, Pennsylvania 1880 Census 

Unknown. "Addison Township, Somerset County, Pennsylvania 1880 Census ." Library Catalog, , https://diglib.genpa.org/s/library/item/9169.

Unknown. "Addison Township, Somerset County, Pennsylvania 1880 Census ." Library Catalog. Accessed . https://diglib.genpa.org/s/library/item/9169.