I like Sufjan Stevens' Michigan and Illinois albums. Huge records full of interesting, quirky folk songs about the states history, wildlife, characters, cities etc. They have such a warm feel to them, nice musical interludes, it is like having a road trip around an idealised maybe 1960s version of the states. There were rumours or plans for him to do all 50 states which I would be very interested in, but it never materialised.