I didn't know it going into the museum, or as I made my plans that week, but I stumbled into a very well-done exhibit on the Samuari. I would encourage anyone to go see this exhibit, it's not terribly big and wouldn't take much time to view. You could then go on to the rest of the museum, or save it for another day.
The exhibit sorted it out pretty well, with history, dress, weapons, and even the daily life. Here's some of the info and images below, but it's certainly not all.
Don't forget to come back soon for Parts #3 and #4, with much more of the normal art being exhibited in the museum.