"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KM1K-R54 : accessed 25 Sep 2012), Maxine M Trauernicht in household of Harry Birchard, Laurel, Election Precinct 21, Cedar, Nebraska, United States; citing enumeration district (ED) 14-29, sheet 4A, family 70, NARA digital publication T627, roll 2240.