"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSD8-PY4 : accessed 7 September 2017), Mark D Powell, Prineville, Montgomery, Johnson Creek, and McKay Precinct, Crook, Oregon, United States; citing enumeration district (ED) 11, sheet 10A, family 210, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,346.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLYL-JM8 : accessed 7 September 2017), Mark I Powell, Princeville, Crook, Oregon, United States; citing enumeration district (ED) ED 56, sheet 7A, family 144, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1279; FHL microfilm 1,375,292.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M48H-83L : accessed 7 September 2017), Marcus D Powell, Prineville, Crook, Oregon, United States; citing ED 24, sheet 9B, line 99, family 241, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1491; FHL microfilm 1,821,491.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XC9W-J2B : accessed 7 September 2017), Marcus D Powell, Prineville, Crook, Oregon, United States; citing enumeration district (ED) ED 2, sheet 2B, line 92, family 63, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1939; FHL microfilm 2,341,673.
"Oregon Death Index, 1903-1998," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VZHT-9DB : 11 December 2014), Marcus Powell, 25 Aug 1931; from "Oregon, Death Index, 1898-2008," database and images, Ancestry (http://www.ancestry.com : 2000); citing Crook, Oregon, certificate number 16, Oregon State Archives and Records Center, Salem.
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