"United States World War I Draft Registration Cards, 1917-1918," database with images, FamilySearch (https://familysearch.org/ark:/61903/3:1:33S7-9YB3-BD?cc=1968530&wc=9FHS-DP8%3A928311001%2C928766601 : 7 May 2019), Oklahoma > Tillman County; A-Mathis, Tom E. > image 1383 of 2344; citing NARA microfilm publication M1509 (Washington, D.C.: National Archives and Records Administration, n.d.). [PDN: Hall-OK-0003]