found: Yanks [MP] 1979:credits (Joan Hickson)
found: Halliwell's filmgoer's comp., 1993(Hickson, Joan; actress; b. 1906)
found: Washington Post, Oct. 21, 1998:obit. (Joan Hickson, 92, died Oct. 17, 1998, Colchester, England; acting career began 1927; graduate RADA, over 100 films; best known as Miss Marple)
found: Internet Movie Database WWW site, December 18, 2015:(Joan Hickson, actress ; b. Joan Bogle Hickson, August 5, 1906 in Kingsthorpe, Northampton, Northamptonshire, England, UK ; d. October 17, 1998 (age 92) in Colchester, Essex, England, UK)