Have found plans for this vessel on Maryland Silver and one photo of her taken just prior to her loss.  
Have not been able to find any other photos or even drawings of her or her sister Missouri.  
Would like some assistance from others with finding additional picture sources.  Also interested in U.S.S. Powhatan.  
Any information would be appreciated.

Try contacting Lamar Roberts in Vicksburg. He's very knowledgeable in that department.
lamarsue@bellsouth.net

American ship plan makers Hornesby and Crothers produced a beautiful plan of the U.S.S. Mississippi some years ago; several sheets with every detail you could want.  I don't know if anyone still carries it, but look around.