Preemptive Disclaimer - This is in no way, shape or form, anything negative against the Trinsic Rose Library. It is in fact, the best resource on Sonoma for runes.

With that out of the way.. I need an alternative rune library which has runes to various dungeon locations. Specifically, at the moment a rune to the Corpser Cave in Covetous. I've been told there are several private libraries around the shard but nobody can seem to remember where they're located.