Jack Boyle's stories first appeared in the early 20th Century. "The Price of Principle" was a short story in the July 1914 issue of The American Magazine. Boyle's character also turned up in Cosmopolitan.
The Boston Blackie collection gathers 14 films released across 1941–1949. Below is every entry in release order, each linking through to its cast, crew and full details in LDB — the Loaded Database.