Transistor Radios
- Eric Wrobbel's illustrated guides, books, and videos for transistor radio collectors.
- http://www.ericwrobbel.com/

Canadian Radio Circuits Database
- CD-ROM with over 900 pages of high-resolution scans of schematic diagrams and service data for home and auto radios from 1938 to 1948. Files are in platform-independent html format, viewable with a web browser.
- http://artofhacking.com/radio.htm

Bob's Antique Radios and Electronics
- Sales of restoration supplies and schematics for vintage radios and juke boxes. Located in La Grange Park, Illinois.
- http://www.radioantiques.com/

Antique Radio Schematics - JustRadios
- Sells schematics and service information for American, Canadian, and European vintage tube radios. They also offer high-voltage electrolytic and metalized polyester-film (Mylar) capacitors for antique radio restoration projects, along with a list of tips
- http://www.justradios.com/

Antique Radio Grille Cloth
- A source of reproduction grille cloth for popular radio models made from 1920 through to 1940. They also provide links, tips, historical notes, and artwork of interest to restorers and collectors.
- http://www.grillecloth.com/