"United States World War I Draft Registration Cards, 1917-1918," digital images, FamilySearch (https://www.familysearch.org : accessed 12 November 2020), Robert Moses Cantwell, serial no. 748, order no. 23, Maupin Precinct, Wasco County, Oregon; citing World War I Selective Service System Draft Registration Cards, 1917-1918, NARA microfilm publication M1509; roll 30.
