The United States Steel Hour (aka Theater Guild on the Air) was a prestigious
American radio
anthology series which embarked on the ambitious plan to bring Broadway theater to radio. Presenting both classic and contemporary plays, the program was broadcast for eight years before it became a television series. It first aired on radio on
September 9,
1945, and within a year the series drew some 10 to 12 million listeners each week.
See more at Wikipedia.org...