copyright 1930; publisher: Radio and Television Institute, Inc., Chicago; leather bound; two brass screws for binding; embossed title on cover; very good conditon; pages have very minor fading.
 
Inside: "The Instructions and diagrams given in this manual cover the latest model All-American Mohawk and Lyric Receivers.  In addition to detailed schematic diagrams of the different types and the power packs, pictoral diagrams are also shown in considerable detail.  Power packs and filter assembly diagrams of value to the service man are also shown."