"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M832-8JW : accessed 21 August 2015), Martin Simonfy, School District 1, Fergus, Montana, United States; citing sheet 1B, family 19, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,969.
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