uo cah has a website, that has a feature of a search for treasure maps.
if there is a specific item you are looking for, it will tell you which map you need to use to get them.
I don't do tmaps for the gear, i do it for the resources, blues, pinks, forged pardons, legendary mapmakers glasses, and few other items
i do take out artifacts for unraveling, but I really don't know what i'm looking on gear.
I usually just keep it if its high in resists and has LRC.
I only do Stash, Supply, and Cache maps by myself.
I don't have lockpicking on the treasure hunters I am using now.
I can cast Unlock spell from Magery to open chests.
While training Remove Trap, I only did Stash and Supply maps.
you can get them in the Dark Guardians room in doom.
They are Malas tmaps, Stash and Supply.
Supply maps are where you get the legendary mapmakers glasses, which can have +1 to +5 cartography skill.
This is useful for getting a small bonus toward a higher quality chest when digging treasure.
you can use POF on them and imbue.