This 1956 educational film from RCA explains the process of recording, producing, and manufacturing vinyl records. Stereo recording was a very new innovation at the time, and stereo records as we know them weren’t available until 1958. Note that 12″ LP’s were introduced by Columbia, not RCA, which developed the 7″ 45 rpm format for singles.
Fascinating! Molly loves her little Numark, with the small water and lights speakers. Her collection of vinyl classics is slowly growing. Funniest comment from her: I was singing along to “Casbah” by Led Zeppelin and she blurted out: “How do you know the words?” I just stared at her a moment, then said, “As you recall, it came out when I was about your age, or even younger. You kids are stealing all our good music!”