All that can presently (May 2013) be gleaned about by internet searching is that Frank X. Nagler is the one-off composer of Uncle Dan (1905) published by Carl Fischer Music Publisher, New York, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Frank X. Nagler.
It does not claim to be complete and represents only the number of items located. Keys:ER