Vintage Sheet Music

I keep getting things at auctions that I don't know what I really have until I get home and go through it. I knew these were vintage but not how vintage. The newest is 1901 and the oldest is 1876. The paper is very brittle and I am hoping there is someone who will want these that knows how to keep them from falling apart further. There is a lot more than what I have pictured, I didn't want to handle them any more than I have to and also my camera is a pain to use right now.