Okay...this is getting confusing. AK and HI count by default - I already have them. I've already got a MA, so that means I have to get all the commonwealths now. Plus, I have no idea what the difference between a commonwealth and a state is. And DC is a part of the continental US geographically, has its own plate, and is a part of the country.

If I went into getting plates from all the territories, you could go crazy. All the island territories have different plates for the different islands. I'd need a whole wall for all of them. I figure "50 states + DC" is the best way to go at first.