All that can presently (June 2019) be gleaned about Gustave Colin from sheet music covers and by internet searching is that he has 2 works published between 1911 and 1917.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 2 works by Gustave Colin.
It does not claim to be complete and represents only the number of items located. Keys:ER