"United States World War I Draft Registration Cards, 1917-1918," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K8Q1-KL8 : accessed 24 Feb 2014), Peter Vander Zanden, 1917-1918; citing Outagamie County no 2, Wisconsin, United States, NARA microfilm publication M1509, (Washington D.C.: National Archives and Records Administration, n.d); FHL microfilm 1674882.