All that can presently (May 2013) be gleaned about by internet searching is that Helen Trix is the one-off composer of I've Joined the Squirrel Family Rag (1916).
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Helen Trix. It does not claim to be complete and represents only the number of items located. Key: Electronic Resource Items