| Sources |
- [S1475] West Virginia. Greenbrier County., Greenbrier Co., WV Marriage Register, (Digital images. West Virginia Division of Culture and History, West Virginia Vital Research Records. http://www.wvculture.org/vrr/ : 2010.), marriage register, 23: 85, Crookshanks-Zimmerman, 1949; accessed 17 Apr 2025. (Reliability: 3).
- [S1652] Social Security Administration, SSDI, (Ancestry.com (http://www.ancestry.com : 2011)), entry for Clarence C. Crookshanks, 2004, SS no. 236-44-4438, accessed 25 Apr 2025 (Reliability: 3).
- [S1241] Find A Grave, Find A Grave, ((http://www.findagrave.com/)), accessed 25 Apr 2025), memorial page for Clarence Coleman “Doc” Crookshanks (28 Mar 1928–15 Mar 2004), Find a Grave Memorial ID 147541067; citing Greenbrier Memorial Gardens, Lewisburg, Greenbrier County, West Virginia, USA; Maintained by Leslie Marshall (contributor 47500869). (Reliability: 3).
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