J.H. de Boos 
Last updated: 27.01.21
All that can presently (June 2019) be gleaned from sheet music covers and by internet searching is that J.H. de Boos has 3 works published between 1891-2 and 1912.
Of ragtime interest is The Piccaninnies' Picnic (1891-2) published by Allan & Co. Pty. Ltd, Melbourne, Australia.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 3 works by J.H. de Boos. It does not claim to be complete and represents only the number of items located. Keys: ER
Title Year Attribution Remarks
       
Piccaninnies' Picnic, The 1891-2  wvicon.gif
Yera'o 191-?  wvicon.gif
Love's Emblem 1912 Blanche Morris (words)  wvicon.gif