"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X3CT-RYP : accessed 18 August 2015), Helmar Jones in household of Emil O Gravdahl, Maple, Cass, Minnesota, United States; citing enumeration district (ED) 0031, sheet 2B, family 44, line 100, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1082; FHL microfilm 2,340,817.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KSKM-32T : accessed 18 August 2015), Helmar Jones, Barclay Township, Cass, Minnesota, United States; citing enumeration district (ED) 11-2, sheet 2B, family 50, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 1912.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:J1GF-NTB : accessed 18 August 2015), Helmar Jones, 02 Mar 2000; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
Is Helmar your ancestor? Please don't go away! Login to collaborate or comment, or ask our community of genealogists a question.