Beitman Most Often Needed Radio Diagrams

Brand	Model	Volume	Page	Pub year
General Househo.	501	1 (1926-38)	73	1926-38

Rider Perpetual Troubleshooter's Manuals

Brand	Model	Volume	Page	Pub year
General Household Utilities Co. (Grunow)	501- EARLY	4	3	1933
General Household Utilities Co. (Grunow)	501- LATE	6	3	1935
General Household Utilities Co. (Grunow)	501- LATE	7	11	1936

The next Vintage Electronics Expo will be on Saturday, January 25, 2025
at the Oakland Expo Center, 2212 Mall Dr E, Waterford, MI