"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MNCG-GTR : 16 July 2017), Harry Loomis in household of Royal H Loomis, East Portland, Multnomah, Oregon, United States; citing enumeration district ED 100, sheet 360B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 1083; FHL microfilm 1,255,083.
"Iowa Marriages, 1809-1992," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XV98-22J : 10 February 2018), Royal H. Loomis in entry for Harry Loomis and Edna V. Martin, 24 Dec 1895; citing Des Moines, Polk, Iowa, reference ; FHL microfilm 1,014,768.
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