Affiliate site Diplomunion.com has so many of these. Pre 3rd war, vanilla WoW, cataclysm, etc. The most common one people use are off of EagleMan's final version, also uploaded here on Hive.
Unprotected Azeroth Wars (or WoW risk, or Age of Chaos, or World of Azeroth) and Dark Ages of Warcraft maps are what you're looking for.