Today I was looking for a book and found in a box these nice ones:
Some journals from 1937 - The Telefunken Vacuum-Tube
![](https://i.imgur.com/83CRjsP.jpg)
Rothe / Kleen - A standard in vacuum tube electronics
Book 1:
Pity, I do not own this one.
Book 2, 1943:
![](https://i.imgur.com/NkaGfSC.jpg)
Book 3, 1944:
![](https://i.imgur.com/jMSDfNb.jpg)
Book 4, 1940:
![](https://i.imgur.com/ZsPHHNK.jpg)
Book 5, 1941:
![](https://i.imgur.com/CJw3DCt.jpg)
Fundamentals of Electron Devices from McGraw-Hill, 1962
![](https://i.imgur.com/MxN1RAh.jpg)
Vacuum tubes and their circuits, 1962
![](https://i.imgur.com/wTLe5f3.jpg)
And another standard book: Barkhausen - Textbook of Vacuum Tubes - General Fundamentals, Book one, 1962
![](https://i.imgur.com/n00JAT2.jpg)
Transmitter Tubes, 1951
![](https://i.imgur.com/n00JAT2.jpg)
And one of my favourite books ever: Meinke/Gundlach - High Frequency engineering pocketbook, 1962
![](https://i.imgur.com/w2KTdor.jpg)
Example: Antennas
![](https://i.imgur.com/Uj9DM5O.jpg)
Example: Vacuum tube made Flip-Flop
![](https://i.imgur.com/DnXTTKF.jpg)
Hope I will find someday the book one from the Rothe / Kleen series to a reasonable price.