"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MKK4-JVY : accessed 5 April 2021), Ada Williamson in household of Lansing Williamson, Springdale, Washington, Arkansas, United States; citing enumeration district (ED) ED 148, sheet 2B, family 34, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 67; FHL microfilm 1,374,080.