From Wikipedia:
Barney Blake, Police Reporter is an American crime drama that aired live on NBC from April 22, 1948 to July 8, 1948. NBC claimed it was the first mystery series to air on TV. The program was canceled after thirteen weeks by its sponsor American Tobacco Company.
Garry Simpson on directing Barney Blake, Police Reporter
Stewart MacGregory on being stage coordinator for Americana and Barney Blake, Police Reporter
Stewart MacGregory on being stage coordinator for Americana and Barney Blake, Police Reporter
Garry Simpson on directing Barney Blake, Police Reporter