"United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MHS5-B7Y : 12 November 2020), Ruben Gresham in household of John Gresham, Campbellsburg, Washington, Indiana, United States; citing enumeration district ED 173, sheet 375A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,321.
Find a Grave, database and images (https://www.findagrave.com : accessed 18 February 2021), memorial page for Reuben Gresham (15 Nov 1839–12 Apr 1892), Find A Grave: Memorial #45536610, citing Hop Cemetery, Campbellsburg, Washington County, Indiana, USA ; Maintained by jbmgs (contributor 46910169) .
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