All that can presently (November 2015) be gleaned about by internet searching is that S.C. Baumann is the one-off composer of Mephisto Rag (1909).
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by S.C. Baumann.
It does not claim to be complete and represents only the number of items located.