Walter Esberger 
Last updated: 22.06.17
All that can presently (May 2013) be gleaned about by internet searching is that Walter Esberger is the one-off composer of Hallelujah Rag (1912) published by Joseph Krolage Music Co., Cincinnati, Ohio, USA.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD