"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZD2-4PN : 15 July 2016), George A Putnam in household of George F Putnam, Mohawk, Montgomery, New York, United States; citing enumeration district ED 57, sheet 323A, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0865; FHL microfilm 1,254,865.