found: Murder by natural causes, 1986:credits (Robert Day)
found: Halliwell's filmgoers companion, 12th ed.(Day, Robert, 1922- ; British director, former cameraman)
found: Internet movie database WWW site, February 23, 2009(Robert Day; alternate names, Bob Day, R. Day; b. September 11, 1922, Sheen, England; director, actor, writer, producer, cinematographer)
found: IMDb, viewed July 27, 2017(Robert Day (I); Born: September 11, 1922 in Sheen, England, UK; Died: March 17, 2017 (age 94) in Bainbridge Island, Washington, USA)