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Joe started to share his collection of very early American valves (vacuum tubes) in October 2019.

Joe has shared some of his published articles with the museum including:

From Research Lab to the Field - GE's Vacuum Tube Contributions During WWI 1915-1918 Joe Gruber and Jerry Vanicek TCA Dec 2015.

Joe wishes to express his gratitude to History-San Jose, California for the information regarding Moorhead Labs. See Moorhead for the links. Joe has shared some of his extensive library with the museum as PDF files.

• Frank Polkinghorn Papers
• John Hammond relay torpedo tube
• Moorhead Tubes
• The first trans-Atlantic flight - Equipment
• The first trans-Atlantic flight - Tubes
• Type T Audion instruction sheet & Original
• William Comings White