"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KSKY-NQ9 : accessed 27 February 2017), Anton Gust, Poplar Grove Township, Roseau, Minnesota, United States; citing enumeration district (ED) 68-29, sheet 2B, line 59, family 37, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 1954.