The link John in Kansas gave us definitely is connected to the Mudcat Songbook, but I know it's not the whole thing.
Why would I say that? Because I know I had at least two songs in the Songbook, and despite assiduous searchings up and down the list there, nowhere, nowhere could I find a song credited to either Uncle DaveO or Dave Oesterreich. I know not what else may be missing, but that I know.
It sure would have been great to have a search capability there.