Ancestry.com. U.S., World War II Draft Cards Young Men, 1940-1947 [database on-line]. Lehi, UT, USA: Ancestry.com Operations, Inc., 2011.
Original data: National Archives at St. Louis; St. Louis, Missouri; WWII Draft Registration Cards for Iowa, 10/16/1940-03/31/1947; Record Group: Records of the Selective Service System, 147; Box: 553