All that can presently (November 2015) be gleaned about by internet searching is that Bernard Ungar is the one-off composer of Doll Rags (1909) published by Hits Publishing Company, Cincinnati, Ohio, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Bernard Ungar.
It does not claim to be complete and represents only the number of items located.