Harry Olsen 
Last updated: 22.06.17
All that can presently (January 2016) be gleaned about by internet searching is that Harry Olsen is the one-off composer of Jazzin' the Cotton Town Blues (1917) published by M. Witmark and Sons, New York, Chicago, San Francisco, USA.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD