All that can presently (June 2019) be gleaned from sheet music covers and by internet searching is that Elmer Bowman has 2 works published between 1898 and 1911.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 2 works by Elmer Bowman.
It does not claim to be complete and represents only the number of items located. Keys:ER