I think this applies to all of the later episodes. While watching the TV Land "First" episode tonight, I noticed during the closing credits that the Kansas River cutoff of the north east corner of the Kansas map was missing. In the end credits, the rifles are on the right side of the screen and the map is on the left on adjoining walls. So I backed up and watched the fight scene in the last act. When the camera pans around the Marshal's office, the guns are on the left side and the map on the right.
The goof is that in the credits, for whatever reason, they used a mirror of the set--it's backwards!
The first color episode.