Board Thread:Community Announcements and Events/@comment-89.240.169.244-20140305201414/@comment-162.157.61.172-20150323070437

The Thieves Cache is not the same as the non-interactable crate mentioned in the letter. There are three caches in Riften with various random supplies, like potions, lockpicks, ect. The Glass Arrows mentioned in the note are unobtainable, since the underwater crate cannot be looted.