"United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MKG1-2H3 : accessed 1 February 2015), Martha S Hathorn in household of Charles Hathorn, Union, Hendricks, Indiana, United States; citing enumeration district (ED) 48, sheet 5A, family 31, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,374,367.