There are also resources for teachers, ranging from interactive lesson plans to a teacher's forum. Internet Modern History Sourcebook Absolutely amazing compilation by a professor at Fordham University. New York State Archives has plenty of exhibits relating to New York, as well as a collection of photographs. NYSA primarily holds legal documents pertaining to the New York State local government. PBS History has a variety of information on its companion sites to its documentaries.
Sites are interactive, illustrated, and interesting.