"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VR22-DSJ : accessed 29 Sep 2012), David J Gripka in household of John A Gripka, Wyandotte Township, Wyandotte, Kansas, United States; citing enumeration district (ED) 105-15A, sheet 4A, family 72, NARA digital publication T627, roll 1266.