found: Sunrise (Motion picture). Sunrise, 2013, c2008:title frame (George O'Brien)
found: IMDb, Jan. 17, 2014(born Apr. 19, 1899 in San Francisco, California; died Sept. 4, 1985 in Tulsa, Oklahoma; actor)
found: The Border patrolman [MP] 1936:credits (the cast, George O'Brien)
found: Halliwell's Filmgoer's companion, 1985(George O'Brien; b. 1900; American cowboy star; entered films as stunt man)
found: Biog. & geneal. master index, June 14, 2006(O'Brien, George (1899-), O'Brien, George (1900-), O'Brien, George (1900-1985))
found: Biog. resource center (Almanac of famous people), June 14, 2006(George O'Brien; b. Apr. 19, 1900, San Francisco, Calif.; d. Sept. 4, 1985, Broken Arrow, Okla.)
found: SSDI, viewed Dec. 1, 2014(George Obrien [sic]; b. Apr. 19, 1899; d. Sept. 1985; last residence: Tulsa, Okla.)
found: U.S. Department of Veterans Affairs BIRLS death file, 1850-2010 via Ancestry.com, viewed Dec. 1, 2014(George Obrien [sic]; b. Apr. 19, 1899; d. Sept. 4, 1985)
found: AP news archive WWW site, viewed Dec. 1, 2014(in obituary dated Sept. 4, 1985: Broken Arrow, Okla.: Actor George O'Brien, a veteran of 75 films, including the Westerns Fort Apache and John Ford's The iron horse, died Wednesday [Sept. 4, 1985] in a convalescent home following a long illness. He was 86)