The Unsent Letter
Deliver the letter found on Edwin VanCleef to Baros Alexston in Stormwind.
Deliver the letter found on Edwin VanCleef to Baros Alexston in Stormwind.


Check VanCleef's loot: the letter starts the quest.
The follow-up leads into the Stormwind Stockade quests.
Loot An Unsent Letter in Deadmines and right-click it to start the quest.
Alliance: Baros Alexston in Stormwind City (57.6, 47.8).
experience only, 2,050 XP.
The Unsent Letter is a level 22 quest; you can pick it up from level 16. It takes you into Deadmines.
Sources: Quest data from ForeverDB.net · ForeverDB: Deadmines dungeon · ForeverDB: Westfall quests · ForeverDB: Stormwind City quests · ForeverDB: The Defias Brotherhood · ForeverDB: Underground Assault · ForeverDB: The Test of Righteousness · ForeverDB: The Unsent Letter