"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3C7-JCM : accessed 5 February 2016), Maggie M Parks in household of Wm P Parks, Keytesville Township Keytesville city, Chariton, Missouri, United States; citing sheet 24A, family 441, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,847.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M2T2-HWD : accessed 5 February 2016), Margaret Parks in household of William P Parks, Salisbury, Chariton, Missouri, United States; citing enumeration district (ED) ED 42, sheet 2B, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,374,789.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8CY-RM5 : accessed 5 February 2016), Maggie May Mories in household of Stephen Mories, Moberly Ward 2, Randolph, Missouri, United States; citing sheet 7B, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,944.