Went to the college. Actually took basic anthropology from Prof. Andelson, back in the '80s. But that wasn't about his own research, that was the usual intro-class stuff.
There are plenty of Amish in southern Minnesota and western Wisconsin, too. I have a hard time telling Amana from Amish by looking, although I could easily tell Amana and Mennonites apart when I lived near them in Iowa.
As for the Amish, they're here in NY. Not what you would think. A good start is Amish Society, by Hostetler.