That's because it was originally an arms museum...
I actually guessed that about halfway through, glad to know I was right. That was a weird day.
Yup, it was originally the Frazier Arms Museum but about a couple of years ago now it went into being a more general history museum because arms alone weren't drawing enough...not that it excessively matters, seeing as it's all a private collection of a man who's not hurting for money.
(btw, I'm from Louisville)