↑ 5.05.1 "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MZ1L-PVB : 14 January 2022), Allen Cope, Fairfield MM, Columbiana, Ohio, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm .
↑ 6.06.1 "United States Census, 1900", database with images, FamilySearch (ark:/61903/1:1:MMCG-71W : Tue Jul 11 13:55:45 UTC 2023), Entry for Allen B Cope and Wilma Cope, 1900.
↑ "Ohio, County Marriages, 1789-2016", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:X89D-X4N : 29 September 2021), A.B. Cope in entry for Dwight Arnholt and Clara C. Cope, 1909.
↑ "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLXL-J96 : accessed 14 July 2023), Allen B Cafe, Unity, Columbiana, Ohio, United States; citing enumeration district (ED) ED 53, sheet 11A, family 79, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1162; FHL microfilm 1,375,175.
Find a Grave, database and images (accessed 01 June 2023), memorial page for Wilma Geiger Cope (1852–9 Nov 1928),Find A Grave: Memorial #49063297, citing New Waterford Cemetery, New Waterford, Columbiana County, Ohio, USA; Maintained by Anne Rupert (contributor 21366448).