"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9LH-K7G : accessed 14 February 2017), John L Martin in household of Vencint S Martin, Des Moines Township, Precinct 3 Des Moines city Ward 4, Polk, Iowa, United States; citing enumeration district (ED) 87, sheet 8B, family 169, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,454.
