Glass Audio 1990/91 Back Issues on CD
Glass Audio Back Issues on CD 1989/94/96
Glass Audio Projects: 17 Vacuum Tube Designs
Glass Audio 1997 Back Issues on CD
Glass Audio 2000 Back Issues on CD
Getting the Most Out of Vacuum Tubes
A Brief History of Bendix Red Bank Tubes
Beginner's Guide to Tube Audio Design
Sylvania Receiving Tubes Technical Manual
RCA Transmitting Tubes
RCA Receiving Tube Manual
Inside the Vacuum Tube
GEC Audio Tube Data
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