Dwarves Deep would probably be your safest bet; You may have to do with a download though. Lost empires have some information, so does most books that details the North.
Hey Delzounblood... Glad to see you're finally here.
Now, sources for Delzoun include:-
- 2e's City of Splendors - Cormanthyr - Drizzt Do'Urden's Guide to the Underdark - Dwarves Deep - Netheril: Empire of Magic - The North boxed set - The Savage Frontier - Waterdeep and the North - Ed's reply files -- '05 and '06 - Lost Empires of Faerun - Silver Marches - George's "The North" timeline