Ancestry.com - Iowa Census, 1838-70
AIS indexes. Original source: Jordan Dodd and Liahona Research, comp.. Iowa Census, 1838-70 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 1999. Original data: 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.