found: Here's Mrs A., 2014:page 4 of cover (Kate Aiken; Kate Aitken)
found: LAC internal file, March 30, 2022(access point: Aitken, Kate, 1891-1971; variant: Aitken, Kate (Scott), 1891-1971; Canadian)
found: OCLC, Sept. 6, 2024(usages: Kate Aitken; Mrs. H.M. Aitken; Mrs. A)
found: Wikipedia, Sept. 6, 2024(Kate Aitken; b. Apr. 6, 1891 in Beeton, Ont.; d. Dec. 11, 1971 in Mississauga, Ont.; Canadian radio and television broadcaster in the 1930s, 1940s, and 1950s; also known by the nickname Mrs. A, she was one of the most famous female broadcasters of her era; also known as an expert in cooking and homemaking; b. Kate May Scott; married Henry Mundell (H.M.) Aitken in 1914; hosted a radio show on CFRB Toronto, CBC; was later a columnist for the Globe & Mail)