The Boomin' Systems: The Evolution of Car Audio - JSTOR Daily
The Evolution of Car Audio - 1922 to Present Day
First Car radios-history and development of early Car Radios
The history of car radios, from AM to Apple - The Globe and Mail
History of the car radio International Repeater Group
Tuning In: 82-Year Evolution from Car Radio to Infotainment – Car Site
Evolution GROM Blog and News
A Brief History of the Car Radio - Alibaba.com Reads
Evolution of the car radio - Exaget