• [S1027] 1930 Allegheny Co, PA. Census.
  • [S1065] Salem Monitor, Salem, Dent Co, MO.
  • [S1071] Dent County Tax Records, Salem, MO., transcribed by unknown compiler.
  • [S1077] Obituary, St. Louis Post Dispatch Newspaper, St. Louis, Mo.
  • [S1078] Interview with Howard D. Hickman Jr (Santa Rosa, CA.), by Howard D. Hickman III, 2005.
  • [S1079] Letter from Patricia Hickman (200 E. Melbourne Peoria, IL. 61603) to Howard Hickman III, 1990 to 2008.
  • [S1080] 1920 Mt. Vernon, OH. Census.
  • [S1116] 1910 Dent Co, MO. Census.
  • [S1157] IL. Death Record.
  • [S1158] Dent Co, Mo. Marriage Record.
  • [S1279] 1920 Alameda Co, CA. Census.
  • [S1293] US Veterans Cemeteries Data Base, Ancestry.com.
  • [S1296] Armandbizgroup.com.
  • [S1301] Oakland Tribune, Oakland, CA.
  • [S1366] PA Marriage Record.
  • [S1585] 1930 Armstrong Co, PA. Census.
  • [S1640] 1900 Greene Co, MO. Census.
  • [S1772] Ohio Deaths, 1958-2007.
  • [S1835] PA Death Record.
  • [S1839] 1920 El Paso, TX. Census.
  • [S1840] 1930 Peoria, IL. Census.
  • [S1922] U. S. passport application.
  • [S2077] 1910 Greene Co, MO. Census.
  • [S2262] Newspaper Clippings, Archived at Univ. of IL, Springfield, MC44.
  • [S2374] 1910 Ohio Co, WV. Census.
  • [S2485] San Francisco Chronicle.
  • [S2675] 1880 Cooke Co, TX. Census.
  • [S2690] 1930 Greene Co, MO. Census.
  • [S2768] Columbus, OH. Directory.
  • [S3024] Passenger List: San Francisco to Hawaii Sept 1929.
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  • [S3577] OH Marriage Record.
  • [S3656] 1940 San Francisco, CA. Census.
  • [S3695] 1940 Peoria Co, IL. Census.
  • [S3696] Franklin Co, OH. Census.
  • [S3752] 1940 Allegheny Co, PA. Census.
  • [S3756] John W. Leonard, Who's Who In Engineering.
  • [S3789] Akron, OH. Directory.
  • [S3939] TX Birth Record.
  • [S4013] Peoria, IL. Directory.
  • [S4066] Obituary of brother Jesse Hickman.
  • [S4207] Daniel J. Hickman, e-mail message from e-mail address to Howard Hickman, Jan 2015.
  • [S4406] 1910 Wayne Co, MI. Census.
  • [S4467] The Los Angeles Times.
  • [S4488] Orpheum Collection, Wichita State Archives.
  • [S4505] Los Angeles Times.
  • [S4653] Interview with Mike Hickman (Kittanning, PA.), by Howard Hickman III, October 2017.
  • [S4764] San Fancisco Examiner.
  • [S5213] 1950 Armstrong Co, PA. Census.
  • [S5219] 1950 Milwaukee Co, WI. Census.