For inventory of contents the best resource is the TSR Archive:
TSR Archive
It looks like you got AD&D 1E mostly, and a few 2E items, which are very close/compatible ruleswise. You recognize 2E easily by the 2nd Edition in the AD&D logo. A few of the modules are BECMI
(The B1 to B4 and X3). Those can be converted to AD&D easily though.
Most of the stuff is either set in Greyhawk or was later retrofitted into the Greyhawk setting. Many of the others are generic enough to fit. And you even have the classic
World of Greyhawk Boxed Set (check this for completeness, are the maps there?)
I6 Ravenloft is a standalone classic 1E adventure. Ship of Horror can probably be fit into any campaign as it's an island setting. The Fraternity of Shadows did a 3E netbook in the
Survey of the Nocturnal Sea which you could milk for additional content. And you have the classic
Ravenloft blackbox (check if all contents are there, it had lots of stuff). So if you want you can delve deeper into Ravenloft. If you do, check out the
Fraternity of Shadows site.
The 2 Encyclopedias list magical items from AD&D 2nd Edition and earlier. While they are interesting resources these two also might have some resale value.
Now to the Forgotten Realms stuff :
Myth Drannor is essentially a mega-ruin/dungeon setting.
Nightmare Keep seems to be a dungeon too.
Are you familiar with either of the AD&D rulesets? AD&D 1E has a good retro-clone/pdf-reference in
OSRIC. But you could probably get the 1E DMG/PHB/UA/MM/MM2 from ebay for very cheap. They're worth a read. Personally i like to blend 1E and 2E AD&D.
I would recommend assembling this into a generic/Greyhawk old school campaign, using either 1E or 2E AD&D (or a blend of both). If you have Greyhawk specific questions check out
www.canonfire.com.