"United States World War I Draft Registration Cards, 1917-1918," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KZN6-Y18 : accessed 10 April 2015), Gerrit Vriezema, 1917-1918; citing Uxbridge City no 17, Massachusetts, United States, NARA microfilm publication M1509 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,684,575.