Mata Wulff 
Last updated: 22.06.17
All that can presently (May 2013) be gleaned about by internet searching is that Mata Wulff is the one-off composer of Baseball Rag (1910) published by Mata Wulff & Co., Indianapolis, Indiana, USA.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD