My dad had a vynil LP with BBC sound effects, which I remember listening to when I was a kid. I particularly liked to listen to the disaster sounds, like cars skidding and crashing and, shockingly, a crowd of people being shot at.
My dad did the sound effects for the local amateur dramatics group and he had a few of these records. He would record them onto reel to reel tape and edit them with a small guillotine, sticking them together with special tape. Incredibly primitive and time consuming by today's standards.