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The Transistor and Portable Electronics - Engineering and Technology History Wiki
Top 10 Portable Radios
Transistor radio - Wikipedia
Transistorradio – Wikipedia
AN/PRC-77 Portable Transceiver - Wikipedia
File:Zenith 8-transistor radio open.agr.jpg - Wikimedia Commons
File:Single transistor radio circuit.svg - Wikipedia
Boy's radio - Wikidata
File:Vintage Spica Transistor Radio, Model ST-600, Sanritsu Electric Company, AM Band, 6 Transistors, Made In Japan, Circa 1965 (35385965595).jpg - Wikimedia Commons
Olimpik - Wikipedia
File:Vintage Roberts Portable Transistor Radio, Model R500, Multi-Band - MW-LW-SW, 7 Transistors, Made In Great Britain, Circa 1963 (13223583534).jpg - Wikipedia
Project 25 - Wikipedia
File:Sony ICF-36 portable radio - overview.JPG - Wikipedia
Juliette 7 Band Radio, Transistor radio, Radio design
File:Vintage JVC FM-AM 9-Transistor Radio, Model 9F-220C (8333901983).jpg - Wikipedia