All that can presently (December 2015) be gleaned about by internet searching is that Jack Hangauer is the one-off composer of The Sultana (1906) published by The Tolbert R. Ingram Music Co., Denver, Colorado, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Jack Hangauer.
It does not claim to be complete and represents only the number of items located. Keys:ER