"United States World War I Draft Registration Cards, 1917-1918," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KXBK-L3L : accessed 07 Nov 2013), Fredrick T Piggott, 1917-1918; citing Westchester County no 3, New York, United States, NARA microfilm publication M1509, (Washington D.C.: National Archives and Records Administration, n.d); FHL microfilm 001819127.