"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZQK-76Q : accessed 24 March 2016), Margaret R Durbin in household of Cecil D Durbin, Crystal, Montcalm, Michigan, United States; citing sheet 1B, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,787.