"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M99B-HVX : accessed 10 May 2023), Joe Hickel in household of Joseph Hickel, Bashaw & Stately Townships Comfrey village, Brown, Minnesota, United States; citing enumeration district (ED) 33, sheet 3A, family 36, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,758.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLGG-GWH : accessed 10 May 2023), Joseph Hickel in household of Joseph Hickel, Wheelock, Williams, North Dakota, United States; citing enumeration district (ED) ED 216, sheet 22A, family 52, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1149; FHL microfilm 1,375,162.
"United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:XKV2-24G : accessed 10 May 2023), Joseph A Hickel, Equality, Williams, North Dakota, United States; citing enumeration district (ED) ED 20, sheet 1B, line 86, family 17, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1745; FHL microfilm 2,341,479.