"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9KD-4JZ : accessed 7 December 2020), Nathan Pistorius in household of Cholot Pistorius, Burlington Township Burlington city Ward 4, Des Moines, Iowa, United States; citing enumeration district (ED) 10, sheet 3B, family 71, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,429.