"United States Census, 1900," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MMKQ-ZJ8 : accessed 21 February 2021), Ida Litymius in household of David Fitzmorris, Hewett, Clark, Wisconsin, United States; citing enumeration district (ED) 22, sheet 4B, family 75, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,781.
"Wisconsin Death Index, 1959-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V8S9-Q97 : 12 December 2014), Ida L Campbell, 02 Oct 1971; from "Wisconsin Death Index, 1959-1997," database and images, Ancestry (http://www.ancestry.com : 2007); citing certificate number 037146, , , Wisconsin, Wisconsin Department of Health, Madison.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JLSV-BYH : 9 January 2021), Ida Campbell, Oct 1971; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).