Oh I had a huge stack of hardbound AD&D 1st edition books that I'd collected from 1984-1988. I think I had just about everyone except Wilderness Survial Guide. Manual of the Planes was my favorite followed by Deities and Demigods. And I know what you mean RH about staring at the Treasure Tables of the DM Guide... or reading about the Relics? Or about psionic powers in the Appendix?
When I was about 16 I sold them all in a garage sale. *sigh*