This is the 1st volume of a 3 volume set that covers the first decade of radio in the home. It features the start-up stories of almost 150 radio manufacturers in the U.S. and gives detailed data on the products they produced. It includes rare photos of the factories and hundreds of photos and magazine ads of their radios. Arranged alphabetically by manufacturer. Volume 1 covers A-C Dayton through J.B. Ferguson, Inc.