All that can presently (February 2016) be gleaned about by internet searching is that Walker O'Neil is the one-off composer of Scale It Down (1924) published by Jack Mills Inc., New York, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Walker O'Neil. It does not claim to be complete and represents only the number of items located. Key: Electronic Resource Items