I have posted two old texts on E-Bay:

1) Electrical Measurements in Theory and Application, 4th Ed., by Smith,
1948;
2) Electrical Engineering, Vol II (AC Circuits), 4th Ed., by Dawes, 1947.

Both are in excellent condition, quite useful, AND EACH HAS A CHAPTER ON
ELECTRON TUBES.

Item #'s are 3580023477 and 3580023807.

Enjoy!

John
Sunnyvale CA USA