All that can presently (June 2019) be gleaned from sheet music covers and by internet searching is that Harry Beaumont has 2 works published between 1896 and 1910.
Of ragtime interest is The Norwood Bicycle March (1896) published by H.F. Schlueter Cycle Manufacturing Company, Cincinnati, Ohio, USA.
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This list is arranged in chronological order and contains 2 works by Harry Beaumont.
It does not claim to be complete and represents only the number of items located. Keys:ER