From the Collector's Guide to Antique Radios, CD-ROM Edition, by Marty and Sue Bunis and George Kaczowka: The Grigsby-Grunow Company was formed in 1928. The company's radio sales were extraordinary due to the superiority of their speakers over that of others on the market. However, the Depression soon caught up with Grigsby-Grunow, and by 1933 the company was bankrupt. The business was re-formed into the Majestic Radio & Television Corporation which made the Majestic line and General Household Utilities which made the Grunow line until 1937.

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1930 operating manual for Majestic models 90, 91, 92, 93, 102, and 103. Contributed by Jay Kinnard.	Log book from Research Laboratories (makers of the Kleer-Tone device) with call signs, locations, frequencies, transmitting power, and a handy place to write the dial readings; the Kleer-Tone device used a dial marked 0-100. Contributed by Jay Kinnard.
Late Twenties' ad prompting you to buy a Majestic highboy console for Christmas and touting the "Majestic Theater of the Air," broadcast on CBS radio from 1928-1930.  Contributed by Jay Kinnard.	Majestic's 90-day warranty.  Contributed by Jay Kinnard.