"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:ML7Z-JGP : accessed 22 July 2019), Velma M Crosby in household of Benjamin F Crosby, Tilly, Greer, Oklahoma, United States; citing enumeration district (ED) ED 120, sheet 8A, family 114, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1253; FHL microfilm 1,375,266.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJM8-LBN : accessed 22 July 2019), Velma Crosby in household of Benjamin F Crosby, Erick, Beckham, Oklahoma, United States; citing ED 9, sheet 4B, line 89, family 68, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1451; FHL microfilm 1,821,451.