Por un escritor de hombre misterioso
In a burst of post World War II innovation, the Regency TR-1 transistor radio became the new "It" gift for the holiday season
Let's Get Small SPARK Museum of Electrical Invention
Transistor radios and how they changed our lives
Transistor Radios: The Evolution of Portable Sound
Who invented the first portable radio? What were they used for? - Quora
Groovy History
Taking the transistor mainstream with music on the go - Marketplace
Transistor radio, Ultimate Pop Culture Wiki
Transistor radios and how they changed our lives
Who Invented the Transistor Radio? Discover the Origins
The transistor radio was invented in 1947. It allowed people to carry radios with them.