All that can presently (July 2015) be gleaned about by internet searching is that Margery Dennis is the one-off composer of The Hurdler (1904) published by The Tolbert R. Ingram Music Co., Denver, Colorado, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Margery Dennis.
It does not claim to be complete and represents only the number of items located. Keys:ER