The stuff you have up tonight is from my era.
I bought a lot of them on 45 at the record shop.
(and I still have all them somewhere)
I did the same until I realized at 45 to 70¢ a pop 45 RPMs were not as good a deal as the albums of 10 or 12 tunes for $1.50 or 2 bucks. I discovered a lot of music that way (more about that later - stay tuned).