Por un escritor de hombre misterioso
National Museum of American History
History of Early Solar Powered Radios • Museum Of Solar Energy
The Transistor and Portable Electronics - Engineering and Technology History Wiki
Radio and digital radio, How it works
Who invented the transistor radio? - Quora
History of the transistor - Wikipedia
Who Invented the Transistor Radio? Discover the Origins
The transistor: 75 years since the famed Nokia Bell Labs invention changed the world - Nokia Bell Labs
Who Invented the Transistor Radio? Discover the Origins
TR-1 The World's First Transistor Radio – Inside the Collection
The Transistor Radio Nuts & Volts Magazine