If you liked you could use the wall as a display rack, or any typical glass and wood cabinet.
You don't need to move very far both VT and NH have very good gun law...
Civil War relics are not even guns! They are items of a greater value, but they are not guns.. All of them shoot black powder which is why they are no longer guns.
Unless the War Between the States moved in time, all of these guns were made before 1898, and are antiques, that do not apply to any gun laws what so ever. If you have any Civil War guns made after 1898 they are modern, and still they do not apply to the law.