IU has put a huge amount of sheet music on line! Not everything in their collection is there yet, but this is an awesome start. Here is a link:
I might add that the Starr collection from the Lilly Library is the one most of us would be interested in. They are still in the process of digitizing it, but it looks like it will be made available.
Thanks for posting this John. I ran across this a while back and found an interesting copy of "Ragtime Episode" by Paul Eno. Interesting in that it is in A notation and does not have the trio or final strain.
… well, interesting to me.