Vacuum Tube library

Schematic Diagrams of Radio Receivers

Schematic Diagrams of Radio Receivers Fascicule n°1

Schematic Diagrams of Radio Receivers Fascicule n°2

Schematic Diagrams of Radio Receivers Fascicule n°3

Schematic Diagrams of Radio Receivers Fascicule n°4

Tube Substitution handbook

Tube Substitution handbook Vol 1

Tube Substitution Handbook Vol 2

Tube Substitution handbook Vol 3

Tube Substitution Handbook Vol 4

Tube Substitution handbook Vol 5

Tube Substitution Handbook Vol 6

Tube Substitution handbook Vol 7

Tube Substitution Handbook Vol 8

Tube Substitution handbook Vol 9

Tube Substitution Handbook Vol 10

Tube Substitution Handbook Vol. 11

Tube Substitution Handbook Vol. 12

Tube Substitution Handbook Vol. 13

Tube Substitution Handbook vol. 14

Tube Substitution Handbook Vol. 15

Tube Substitution Handbook Vol. 16

Tube Substitution Handbook Vol. 17

Tube Substitution Handbook Radio-Shack 1980

Tube Substitution Handbook

Sylvania Tube Substitution Manual 

Tube Caddy: Tube Substitution Guidebook

Tube Substitution Handbook

Receiving tube substitution guide book