L.A. Callan 
Last updated: 22.06.17
All that can presently (March 2015) be gleaned about by internet searching is that L.A. Callan is the one-off composer of Georgetown University March (1895) published by John F. Ellis & Co., Washington, D.C., USA.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD