The Early Zenith RadiosAn illustrated look at the tabletop battery radios built by Zenith from 1922 to 1927. Zenith was a Chicago based radio manufacturer, and each tabletop battery radio they made between 1922 and 1927 is featured here and described in detail. Included are comprehensive functional descriptions on each set's operation, which uses color coded diagrams to aid in describing the circuits. Over 400 color photos and over 200 diagrams illustrate the thorough text.