"Reaping down upon the underworld to smash ganglands comes a friend of the unfortunate an enemy of criminals, the mysterious all powerful character who is a problem to the police. A crusader for law, in reality Dan Garrett a rookie patrolman loved by everyone but suspected by none of being the Blue Beetle. As the Blue beetle he hides behind a strange mask and a suit of impenetrable blue chain armor flexible as silk but stronger than steel."
…world’s first commercial radio station, KDKA, began broadcasting in Pittsburgh in 1920.