"Iowa, Delayed Birth Records, 1850-1939," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q246-6XL3 : accessed 13 September 2020), Erwin W Iosbaker, 30 Aug 1913, Davenport, Scott, Iowa, United States; citing reference ID 189771, State Historical Society of Iowa, Des Moines; FamilySearch digital folder 101713790.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDMF-VDK : accessed 13 September 2020), Erwin W Iasbaker in household of Earl Iasbaker, Davenport Ward 5, Scott, Iowa, United States; citing ED 171, sheet 3B, line 71, family 75, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 513; FHL microfilm 1,820,513.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XMV5-Y63 : accessed 13 September 2020), Erwin W Iosbaker, Grinnell, Poweshiek, Iowa, United States; citing enumeration district (ED) ED 10, sheet 8A, line 17, family 203, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 680; FHL microfilm 2,340,415.
1940 U. S. Federal Census. Household of Irwin Iosbaker, enumerated 8 April 1940. Poweshiek County, Iowa - Grinnell. Series T627, Roll 1200, ED 79-10, page 5A. National Archives and Records Administration, District of Columbia.
Social Security Death Index: Name: E. W. Iosbaker Social Security Number: 483-05-8513 Birth Date: 30 Aug 1913 Issue Year: Before 1951 Issue State: Iowa Last Residence: 34112, Naples, Collier, Florida Death Date: 6 Feb 2009
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