Brief TLS, 1 p., 8vo., March 10, 1964, Los Angeles.  Ambler thanks a fan for his letter regarding his novel, “The Light of Day.”  Fine condition, with one mailing fold and light wrinkling at the corner tips.  Eric Ambler was the author of classic spy novels, including “Background to Danger,” “Cause for Alarm,” “Coffin for Dimitrios,” and “Journey Into Fear,” all of which became popular films.  He was also a prolific screen and television writer, winning an Oscar nomination for his screenplay for The Cruel Sea (1956).