↑ "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:ML1P-JS3 : 29 October 2015), Edwin Peterson in household of Chas Wm Peterson, Burlington Ward 1, Des Moines, Iowa, United States; citing enumeration district (ED) ED 5, sheet 24B, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,374,414.
↑ "United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8BK-1M5 : 14 December 2015), Esther Peterson in household of Edw Peterson, Burlington Ward 3, Des Moines, Iowa, United States; citing sheet 5A, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,487.
↑ "United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KMTG-G3M : accessed 10 September 2016), Esther Peterson in household of Edwin N Peterson, Ward 3, Burlington, Burlington Township, Des Moines, Iowa, United States; citing enumeration district (ED) 29-10, sheet 3A, family 63, 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 1156.
↑ "Iowa, County Births, 1880-1935," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KHRR-FDY : 20 May 2016), Edwin Nels Peterson, 12 Feb 1894; citing Burlington, Des Moines, Iowa, United States; county district courts, Iowa; FHL microfilm 1,750,416.