Tulane University has some treasures. My boss brought this one to my attention:
It is a copy of a map done in 1797 showing the Maison Rouge land grants along the Ouachita River. Quite prominent in the map is Fort Miro along with various bayous and rivers you may recognize. You can click on the photo to make it bigger and then hold the Ctrl while rolling the wheel on you mouse to make it even bigger! What a treasure!