From ThresholdRPG Wiki
There are two types of storage facilities in Threshold:
Armory: Storage for weapons and armor.
RP Storage: Storage for clothing, role play oriented items, or other items specially flagged to be RP Storeable. In character this is called "Reserved Property."
There is a storage facility located in every major city. Each facility has at least two rooms. One for Armory storage and one for RP Storage.
Sablean Storage Facility
From the Center of Town (CoT): 1 west, 1 north, 2 east. Sable Adventurers Guild: 2 east
Thracian Storage Facility
From the Center of Town (CoT): 4 east, 1 north
Androctan Storage Facility
From the Obsidian Obelisk: 2s, se, sw, s, 4w, n, w, u