"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MX74-8JY : 12 April 2016), Henry Alexander, Washington, Shelby, Ohio, United States; citing family 23, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6LW-R3X : 12 April 2016), Henry Alexander, Ohio, United States; citing p. 52, family 416, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,743.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8SM-WW5 : 12 August 2017), Catharine Alexander in household of Henry Alexander, Newberry, Miami, Ohio, United States; citing enumeration district ED 138, sheet 163C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 1049; FHL microfilm 1,255,049.