[Best Programs for a 20th Century Americanist]

Hey y'all,

So, I'm relatively new here, and I've been dancing around the idea of applying to PhD programs since I was an itty bitty undergrad. But since I've taken a little bit of time off researching, and because I know the general rankings are based on sort of a crazy methodology, I was just wondering what programs are considered "best" for a 20th Century Americanist. I know it's not a particularly niche field, so I figure there might be more than a few out there. 

Thanks!