Editing my own question: signed in 1963, but taken much earlier. Black and white
publicity glossy by Bruno of Hollywood NYC
The duration of Meet Boston Blackie is -3660.0 seconds.
The duration of Confessions of Boston Blackie is 1.08 hours.
The duration of Alias Boston Blackie is 1.12 hours.
The duration of After Midnight with Boston Blackie is 1.08 hours.
Alias Boston Blackie was created on 1942-04-02.
Meet Boston Blackie was created on 1941-02-20.
The Return of Boston Blackie was created on 1927-08-01.
Confessions of Boston Blackie was created on 1941-12-08.
After Midnight with Boston Blackie was created on 1943-03-18.
Trapped by Boston Blackie - 1948 is rated/received certificates of: USA:Approved
A Close Call for Boston Blackie - 1946 was released on: USA: 24 January 1946
Boston Blackie's Little Pal - 1918 was released on: USA: 26 August 1918