Popular Electronics, et. al.
All of the Popular Electronics magazines from 1954 to 1982- http://www.americanradiohistory.com/Popular-Electronics-Guide.htm Looking around, that site has a *ton* of magazines- http://www.americanra...
Forum Discussion
Some may find this you tube video neat as well- https://www.youtube.com/watch?v=EzyXMEpq4qw- Hand Made Vacuum Tubes by Claude Paillard.
