Top of my head:
Dungeons & Dragons boxed set (white box, collector's edition)
Dungeons & Dragons, Supplement I, Greyhawk
Dungeons & Dragons, Supplement II, Blackmore
Dungeons & Dragons, Supplement III, Eldrich Wizardry
Dungeons & Dragons, Supplement IV, Gods, Demigods, and Heroes
AD&D Monster Manual (original cover)
AD&D Players Handbook (both original and Easley covers)
AD&D Dungeon Masters Guide (both original and Easley covers)
AD&D Deities & Demigods (with Cthulu and Melnibone mythos)
AD&D Fiend Folio
AD&D Monster Manual II
AD&D Unearthed Arcana
AD&D Oriental Adventures
AD&D Manual of the Planes
Greyhawk Folio (two copies with different title lettering)
Greyhawk Boxed Set (1983)
Most of the AD&D modules published before 1985
Dungeons & Dragons, Basic Set (Holmes with chit-sheets, complete)
Dungeons & Dragons, Basic Rulebook (Moldvay)
Dungeons & Dragons, Expert Rulebook (Cook)