Hi !

If I had to rely on computers and the internet to supply schematic diagrams for vintage electronics , I'd be done before I got started. 

You can't beat a set of Ryders manuals or Howard W. Sams folders.
Books that were authored  about a subject, when that subject was new at the time, are frequently the only records you can go to and get the facts.  

Book in hand is the best !

Bob Hodge 

Robert Hodge,
Senior Engineer
Belfer Audio Archive
Syracuse University
222 Waverly Ave .
Syracuse N.Y. 13244-2010

315-443- 7971