"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KMYM-V3L : accessed 16 Oct 2012), Etta L Allen in household of Gorman R Allen, Benton Township, Fremont, Iowa, United States; citing enumeration district (ED) 36-1, sheet 4B, family 82, NARA digital publication T627, roll 1162.