After 1920, his children were split up. The youngest two (Marie and Glenn) were raised by Oscar's brother John D. Hall and his wife Golda. The older two sons (Clifford and Walter) were raised by other families.
Sources
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MMTS-1ZD : 20 January 2015), Oscar R Hall in household of John Hall, Fort Scott city Ward 5, Bourbon, Kansas, United States; citing sheet 11A, family 228, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,471.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M2CN-M6R : 29 October 2015), Roy Hall in household of Angeline E Hall, Dale, Kingman, Kansas, United States; citing enumeration district (ED) ED 87, sheet 4B, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,374,456.
"United States World War I Draft Registration Cards, 1917-1918," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K3RX-TW3 : 12 December 2014), Oscar Roy Hall, 1917-1918; citing Kansas City no 1, Missouri, United States, NARA microfilm publication M1509 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,683,330.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M8HD-ZCX : 14 December 2015), Oscar R Hall, Kansas City Ward 3, Jackson, Missouri, United States; citing sheet 1A, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,924.
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