John C. Weber 
Last updated: 22.06.17
All that can presently (June 2017) be gleaned about by internet searching is that John C. Weber is the one-off composer of St. Louis World's Fair (1904). The front cover of the sheet music proclaims him to be the director of Weber's Military Band.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD