*"United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MWZG-V5V : 23 December 2020), Mervin G Day in household of Samuel C Day, Cornish, Sullivan, New Hampshire, United States; citing family , NARA microfilm publication (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:M8WV-2MZ : 20 February 2021), Mervin G Day, Ludlow, Windsor, Vermont, United States; citing enumeration district ED 255, sheet 149B, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,255,350.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MMPH-PLB : accessed 12 September 2021), Mervin Day, Ludlow township Ludlow village, Windsor, Vermont, United States; citing enumeration district (ED) 276, sheet 5A, family 112, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,696.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M2VL-GS9 : accessed 12 September 2021), Mervin G Day in household of Frank G Day, Newton Ward 2, Middlesex, Massachusetts, United States; citing enumeration district (ED) ED 961, sheet 5A, family 100, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 603; FHL microfilm 1,374,616.
Find a Grave, database and images (https://www.findagrave.com/memorial/184751644/mervin-g-day : accessed 12 September 2021), memorial page for Mervin G. Day (29 Aug 1835–25 Aug 1918), Find a Grave Memorial ID 184751644, citing Lake Grove Cemetery, Holliston, Middlesex County, Massachusetts, USA ; Maintained by Country Mouse (contributor 46804908) .
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