https://www.rfcafe.com/references/radio-news/delco-all-transistor-auto-radio-august-1957-radio-tv-news.htm
Delco's All-Transistor Auto Radio, August 1957 Radio & TV News - RF Cafe
Modern day radios use a single IC (e.g., NXP SAA7706H) for performing all reception, filtering, amplification, and tuning functions
all transistorauto radio