Radio Journeys 73 ... The Return of the Serials

This week, the serials of '32 are back, with another episode of the Redbook Dramas, Family Doctor, Si and Elmer, and the World Adventurers' Club (program ad pictured at right). But first, one last look at early radio history, with a little more consideration of the first broadcasters--what were the "other" firsts in early radio?