The Square of Many Colours was first published in 1948 (London: Wm. Collins). I can find nothing about the author other than she did write other romance novels.
White Circle CD 409 - 1949
White Circle CD 409 back
The Case of William Smith was published in 1948 (Philadelphia: J.B. Lippincott). Patricia Wentworth is a pseudonym for Dora Amy Elles. Elles (1878 - 1961) wrote a series of 32 crime novels featuring Miss Silver, the first of which was published in 1928, and the last of which was published in the year of her death. She published over 40 other novels.
White Circle CD 423 - 1949
White Circle CD 423 back
Margaret Elizabeth Sangster was born in Brooklyn, New York, in 1894 and died in Valatie, New York, October 1981. Sangster was a writer who began as a columnist and journalist, became an editor and novelist, and wrote poems, articles, short fiction stories, in addition to numerous radio and television scripts. She was named for her prominent grandmother, Margaret Elizabeth (Munson) Sangster (1838-1912), an inspirational writer and poet in the Victorian era. Surgical Call was first published in 1937 (Philadelphia: The Blakiston Company).
White Circle CD 433 - 1950
White Circle CD 433 back