Short History of HiFi & Getting the most out of Vacuum Tubes etc etc

[Nakman]

http://www.nutshellhifi.com/library/tinyhistory2.html

astute and what seems to me (an arts man!) a sound engineer 'sound' approach.

http://www.nutshellhifi.com/library/MostVacuumTubes.pdf

Getting the most out of Vacuum Tubes (12.5MB PDF, 164 pages)
Written in 1960 by Robert B. Tomer, a CBS Electronics engineer, and an essential resource for all engineers and designers working with vacuum tubes today. I'd like to thank John Atwood of One Electron for the scan of this rare and long out-of-print book.

A member of the AES and triode fan the whole library of AES articles is at

http://www.nutshellhifi.com/library

I hope these are interesting to others as well