"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDJV-TKM : 12 April 2016), Clara Friedley in household of Henry Friedley, Iowa, United States; citing p. 14, family 91, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 545,877.