Of course, there was far less available in those days, but it didn't matter as records were very expensive. An LP cost about a third of a student's weekly income! A typical collection might have a dozen items in it, so of course, you got to know every note! That's why you would put up with bad radio reception to hear other jazz from the Voice of America or American Forces Network in Europe. (The BBC didn't like jazz and at one time had bans on both boogie woogie and bebop!)
No, I no longer own the records I bought back then. Keeping pace with the times in the last decade I've been using streaming. So my jazz listening career stretches from 78s to Spotify!