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 Michigan Vintage Electronics Club has a "garage sale" event during Plymouth, MI's Old Village Yard and Trunk Sale, April 26 8am-3pm. Located on Mill St near the RR tracks.
The next Vintage Electronics Expo will be on Saturday, October 4, 2025, 9 am to 3 pm in partnership with The Kalamazoo Hamfest.
at the Kalamazoo County Expo Center, 2900 Lake St., Kalamazoo, MI