According to the 1910 and 1920 censuses, Iver immigrated to the United States in 1879.
Sources
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M2LB-R29 : accessed 19 February 2016), Iver Iverson, Rushford, Fillmore, Minnesota, United States; citing enumeration district (ED) ED 34, sheet 13A, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,374,710.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWYH-WGX : accessed 19 February 2016), Iver Iverson, Rushford, Fillmore, Minnesota, United States; citing sheet 8A, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,830.
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