All that can presently (September 2019) be gleaned about Alex Gerber from sheet music covers and by internet searching is that he has 3 works published between 1913 and 1922.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 3 works by Alex Gerber (1895-1969).
It does not claim to be complete and represents only the number of items located. Keys:(w&m)