Near the first summer after I started interning at WNET, I worked for the *Emmy Award Winning Series American Masters -- a department I'm back in as of now. It is here that I met Gail Levin, a producer that was working on a for web series of short documentary segments funded by the NEH called Picturing America.
At any rate, they're all up now and you can watch them all at the provided link above. Go watch it and learn a little bit about America's history through art.
Elementary Educators and History teachers, you may want to check this out to see if any of this is of any use to you.
*Sorry, had to do that.