Question: What type of publication does Len Deighton and Margaret Landon have in common?
Sentence (from "Margaret Landon"): Margaret Landon (September 7, 1903 – December 4, 1993) was an American writer best remembered for "Anna and the King of Siam", her best-selling 1944 novel of the life of Anna Leonowens which eventually sold over a million copies and was translated into more than twenty languages.
Relevant evidence: Yes