Technical books online

"I've found that most of the technical books published before about 1964 never had their copyrights renewed, so now are in the public domain.  So I am endeavoring to digitize and post some selected books relating to the "vacuum tube age" of electronics here.

Many - maybe over half now - of these books were scanned by other people and contributed for me to post here.  Many, many thanks to all the individuals who have helped out with this endeavor.  I find that I do not have much time to scan books these days - the demands of the "day job" have increased much over the past few years - so I'm not doing a lot of scanning myself.  If you have material that you would like to contribute, please send me an email...."