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.
This list is arranged in chronological order and contains 1 work by John C. Weber. It does not claim to be complete and represents only the number of items located. Key: Electronic Resource Items