All that can presently (May 2013) be gleaned about by internet searching is that A, Muguerza is the one-off composer of Doll Rags (1906) published by Thos. Goggan & Bros., Galveston, Texas, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by A, Muguerza.
It does not claim to be complete and represents only the number of items located. Keys:ER