"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MS9R-MG6 : accessed 28 July 2015), Kate Busman in household of John Busman, Polkton township Coopersville village, Ottawa, Michigan, United States; citing sheet 15B, family 362, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,738.