"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLBM-FVG : 29 October 2015), Issac L Haller, Big Creek, Union, Oregon, United States; citing enumeration district (ED) ED 274, sheet 1A, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,375,303.