During the last few days I've gone into Cyrodiil delves to kill a boss for the 1-hour boost to AP earned, and in every case I've had a treasure map drop from a random mob in the delve-- not from the boss, mind you, or from a container, but from the corpse of one of the many low-level mobs I was killing as I worked my way through the delve. This makes me wonder if Cyrodiil delves might be good locations to farm treasure maps. Has anyone else noticed this, or was it just a fluke?