I just stumbled across a big collection of digitized cylinders at Syracuse University Library. It’s not very big but it is clean and modern.
Check out, for example, this 1916 one-step by Vess Ossman. What’s a one-step? No idea. I think that he was 7 years from death at this point, and pretty much at the end of his career.
The one-step:
http://www.streetswing.com/histmain/z3onestp.htm