Box 13 was a syndicated radio series about the escapades of newspaperman-turned-mystery novelist Dan Holliday, played by film star Alan Ladd. Created by Ladd’s company, Mayfair Productions, Box 13 premiered August 22, 1948, on Mutual’s New York flagship, WOR, and aired in syndication on the East Coast from August 22, 1948, to August 14. 1949. [...]