"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M9KV-NGF : accessed 20 January 2015), Margaret E Ainsworth in household of Lucian L Ainsworth, West Union Township West Union city Ward 1-3, Fayette, Iowa, United States; citing sheet 5B, family 131, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,432. نسخة محفوظة 2016-06-10 على موقع واي باك مشين.
"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M9KV-NGF : accessed 20 January 2015), Margaret E Ainsworth in household of Lucian L Ainsworth, West Union Township West Union city Ward 1-3, Fayette, Iowa, United States; citing sheet 5B, family 131, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,432. نسخة محفوظة 2016-06-10 على موقع واي باك مشين.