"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9SC-8YK : accessed 3 June 2022), Carl O Sjokvist, Belle Creek Township, Goodhue, Minnesota, United States; citing enumeration district (ED) 34, sheet 5B, family 79, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,764.
"Minnesota Deaths, 1887-2001," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:ZZLB-RJMM : 7 July 2020), Carl Oscar Sjoquist, 15 Jun 1939; citing Death, Minnesota State Department of Health, St. Paul.