Hattiesburg has an African American Military History Museum and that place is showing Louisiana Native Guard photos from private collections. Best use of a museum I can think of. (A catalog would be nice, too.)
Meanwhile, the African American Civil War Memorial in DC, seems to be the smallest museum in the world, at 700 sq ft. Some $5 million in tax funding has been found but will yield another measley 1400 additional sq ft under current plans.
The interesting thing about this museum (and its curator) is that while we in the general reading public suffer the terrible backwash from Ken Burns, Killer Angels, and the Centennial, the African American Civil War historian fights a daily struggle against the nonsense that was Glory. Have a look.