Used to buy 45s (singles) as they hit the charts. I can remember buying the Beatles' Hey Jude and Steam's Na Na Hey He Kiss him Goodbye. Most of the others escape me. As far as LPs, I'd have to guess either We're An American Band or Billion Dollar Babies.
I remember visiting family in Edinburgh in 72. Dad bought a double live Billy Connolly LP. I still have that one. Funny as hell. Friends don't have a clue what he's saying.