Ancestry.com, Pennsylvania, Compiled Census and Census Substitutes Index, 1772-1890 (Provo, UT, USA: Ancestry.com Operations Inc, 1999).

• Title	Ancestry.com, Pennsylvania, Compiled Census and Census Substitutes Index, 1772-1890 (Provo, UT, USA: Ancestry.com Operations Inc, 1999).
  Short Title	Pennsylvania, Compiled Census and Census Substitutes Index, 1772-1890
  Repository	Ancestry.com
  Source ID	S95
  Text	Jackson, Ronald V., Accelerated Indexing Systems, comp.. Pennsylvania Census, 1772-1890. Compiled and digitized by Mr. Jackson and AIS from microfilmed schedules of the U.S. Federal Decennial Census, territorial/state censuses, and/or census substitutes.