"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M68B-NMF : 12 April 2016), Amos Snell in household of Charles Snell, Ashford, Windham, Connecticut, United States; citing family 161, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MXVY-8WX : 20 August 2017), Amos E Snell, Rivoli, Mercer, Illinois, United States; citing enumeration district ED 186, sheet 459D, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,236.