The First Transistor Radios - 1950s

The History of the Transistor Radio

Flashback 1954: The Transistor Radio Is Born

How were 50s radios powered? They probably wouldn't use batteries, but could they have been taken around (were they portable? Not connected to the house, etc.)? - Quora

DataViz as Art: The Beautiful Transistor Radio – Michael Sandberg's Data Visualization Blog

Regency TR-1 Transistor Radio, the first transistor radio

Transistor radio, Ultimate Pop Culture Wiki

378 Vintage Transistor Radio Stock Photos, High-Res Pictures, and Images - Getty Images

A Vintage Transistor Radio Gets A Repair

1950's Emerson 888 Portable Transistor Radio - HRTV

The Fascinating History of Car Audio

Transistor radio - Wikipedia

Vintage Transistor Radios of the 1950s and 60s

Regency TR-1 - Wikipedia

How The Sony Transistor Radio Changed The World – or at least some of it. – Graham Thomas

Old portable radios were marvels of technology from the 1950s to the 1980s - Click Americana