My first record was a 45 called Behind the Green Door and I have no clue what may have become of that. My first album was either Ricky Nelson or Johnny Mathis, don't recall. I do still have my parents 78 collection and I have never counted them but there are over 100 and I know there are some Billie Holliday albums in there.
My entire LP collection from childhood through 1971 was taken in a burglary. After the burglary I can't recall which album I purchased first but if I had to hazard a guess maybe Elton John's, Madman Across the Water or the replacement of Cream, The Beatles or Crosby, Stills Nash & Young. My son made off with my turntable and album collection maybe 10 years ago and I know he still has the albums. He was listening to vinyl before it became all the rage again, not counting you serious folks.
I have no idea which CD I purchased first but I can tell you I still have it.