I think Hunter would keep you busy for awhile. I came across an online archive they have on flickr. If you haven't seen it, do spend some time looking. Very informative!
I'd also suggest going through old online newspapers. You can do google news archives for free. Fulton, NY also keeps a good online repository of old online newspapers, also FREE
Don't be afraid to ask the actual schools for help. Some will be more open than others.