"United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MZ7S-9JD : accessed 21 December 2014), George Devries, Holland Ward 5, Ottawa, Michigan, United States; citing sheet 14B, family 194, NARA microfilm publication T625, National Archives and Records Administration, Washington D.C.; FHL microfilm 1,820,792.