Not sure if all of these have been found but here's some neat stuff.
Maps - Quick Links - Some phenomenal maps here:
http://web.archive.org/web/200208022...m/maplist.php3
Faction Adjustments by Mob (scroll to the bottom):
http://web.archive.org/web/200206050...m/fact_mon.htm
Fashion Table:
http://web.archive.org/web/200211040...shion_A_E.html
Locations (/loc) of Norrath:
http://web.archive.org/web/200208102.../locsheet.php3
More Location Stuff:
http://web.archive.org/web/200202021...ginallocs.html
Um - some neat shit in here... also, an old EQ Caster spell info program that still works... and a treasure trove for people wanting old spell icons, etc.. tons of crap:
http://gnum.us/eq/
Spell Location - Where to get those elusive hard to find ones:
http://web.archive.org/web/20020605163530/everquest.allakhazam.com/Spell_Locations.htm
Research Stuff:
http://web.archive.org/web/200206091...m/printer.html
Items stuff
http://web.archive.org/web/200306010...ference/items/
Class Strat & Play Guides (some hilarious and really bad tips in some of these)
http://web.archive.org/web/200212061...playguides.asp
Awesome old EQ LINKS site....unbelievable amount of info:
http://web.archive.org/web/200208020...w.eqlinks.com/
Ahh, there's just too many to list. Most of these sites will bring you to others to find just about anything you need.