• Bouwbeschrijving Philips FM-13 tuner
• Bouwbeschrijving Philips D13, stereo-decoder voor de FM-13
• Basic theory and application of electron tubes (Dep. of Air Force / Navy 1952) - (17Mb)
• The radio amateurs handbook (1937) - (54Mb)
• New Audiomans Guide (Audel 1944) - (40Mb)
• Electronics Amplifier circuits - (12Mb)
• Electron Tube circuits (McGraw/Hill 1950) - (22Mb)
• GE Radio tube substitution list - (510Kb)
• GE Essential characteristics - (10Mb)
• The essentials of electron tubes and their circuits (Hoag 1942) - (15Mb)
• Radio engineering principles (Lauer/Brown 1928) - (13Mb)
• Mullard valves and electron tubes - (9Mb)
• The Radio Handbook (Orr) - (61Mb)
• Philco - Wiring diagrams and parts-list (receivers) - (10Mb)
• The RCA Radiotron manual (1933) - (8Mb)
• Beam Power tubes (Tech. papers Schade 1938) - (2Mb)
• RCA Transmitting tubes manual (TT3 1938) - (9Mb)
• RCA Transmitting tubes manual (TT5 1962) - (26Mb)
• RCA Receiving tubes manual (RC13 1962) - (26Mb)
• RCA Receiving tubes manual (RC14 1940) - (21Mb)
• RCA Radiotron designer handbook (1944) - (16Mb)
• RCA Receiving tubes manual (RC13 1962) - (15Mb)
• Principles of Electron tubes (Reich 1941) - (18Mb)
• Theory and applications of electron tubes (Reich 1944) - (36Mb)
• Sylvania News: How to use voltage regulator tubes (1946) - (3Mb)
• Sylvania Technical manual Radio tubes (1951) - (15Mb)
• Taylor tubes - specifications (Flyer) - (2Mb)
• Telefunken Röhren - Von A bis Z (1930-31) - (3Mb)
• Western Electric vacuum tubes (1933) - (4Mb)
• Western Electric electron tubes (1956) - (4Mb)
• Electronic tube theory and Circuits FM11-63 - (5.7Mb)

Met dank aan P. Gelder.