C. W. Dimick of United States Cartridge Co. and other manufacturers' reps (including Winchester and UMC) founded the American Shooting Association Feb. 11 1889. S.A. Tuck Tucker, Parker's sales agent and Capt. A. W. duBray (then a sergeant in the U. S. army) were consulting board members of the newly formed ASA, and Tuck wrote the handicap rules. Dimick was President and L.C. Smith was a Director.
The ASA dissolved in 1892 and the Interstate Manufacturers and Dealers Assn., Interstate Assn. took over organized trap shooting.

More on Dickey
http://library.la84.org/SportsLibrary/SportingLife/1898/VOL_30_NO_26/SL3026023.pdf
I believe Dickey was later a USCC Professional Rep.