All that can presently (August 2015) be gleaned about by internet searching is that Harry L. Newton is the one-off composer of I'd Like to Be a Soldier Boy in Blue (1909) published by Will Rossiter, Chicago, Illinois, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 2 works by Harry L. Newton.
It does not claim to be complete and represents only the number of items located. Keys:ER(w&m)