If you ever get down to northeast Oklahoma stop by the JM Davis Gun Museum in Claremore.
They've got all kinds of oddball stuff along with lot's of really nice stuff.
If memory serves me correctly admission is free also.
While in town stop by the Will Rogers museum also.
As long as your in that part of the state take a side trip up to Bartlesville to Woolaroc museum.
It's a collection of stuff that Frank Phillips, of Phillips petroleum fame, gathered over the years .
One fine collection of colt firearms there, said to be the finest collection around.
http://www.thegunmuseum.com/http://www.woolaroc.org/