Danger Under the Sea

Jack Armstrong, the All-American Boy was a radio adventure series which maintained its popularity from 1933 to 1951. The program originated at WBBM in Chicago on July 31, 1933, and was later carried on CBS, then NBC and finally ABC.

Wikipedia. CC BY-SA 4.0. Updated Jul 20, 2026.

“Danger Under the Sea.” Jack Armstrong, The All-American Boy. Radio broadcast, October 3, 1947.