"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M68L-VRM : 3 March 2020), Henry E Buckingham in household of George Chapman, Saybrook, Middlesex, Connecticut, United States; citing family 257, 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:MFCP-4QS : 29 July 2017), Herg E Buckingham, Saybrook, Middlesex, Connecticut, United States; citing enumeration district ED 84, sheet 366A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,102.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M979-528 : accessed 6 March 2020), Henry E Buckingham, Saybrook township, Middlesex, Connecticut, United States; citing enumeration district (ED) 291, sheet 13A, family 314, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,142.
Find A Grave, database and images (https://www.findagrave.com : accessed 06 March 2020), memorial page for Henry E. Buckingham (6 Oct 1828–27 Mar 1903), Find A Grave: Memorial #158587792, citing Fountain Hill Cemetery, Deep River, Middlesex County, Connecticut, USA ; Maintained by The Good Son (contributor 47687047) .
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