Daryl: I just saw the "Owned by Mr. Dickey who shot...(and?) won the worlds trap contest at the first Chicago World's Fair" (1903)

If that is O.R. Dickey he won the 1896 GAH
http://www.la84foundation.org/SportsLibrary/SportingLife/1896/VOL_27_NO_02/SL2702020.pdf
O. R. Dickey, of Boston. Mass. used a very handsome Parker Bros, hammerless gun, of the pigeon model, and his load consisted of 50 grains, or about 3 1/2 drams by measure, of American “E. C.” powder, 1 trap wad, one 3/8 inch pink felt, one 1/4-inch pink edge, and 1 1/8 ounce of No. 7 chilled shot in the United States Cartridge Co.'s “Rapid” shells, 2 3/4 inches in length.


George Roll must have used the Stannard & Moran SBT at the 1908 GAH
http://www.la84foundation.org/SportsLibrary/SportingLife/1908/VOL_51_NO_17/SL5117024.pdf
Amateur Championship- George Roll, 183x200 then 19x20 shoot-off. Four men broke 183 in the amateur championship. Roll, of Illinois won the shoot-off over D. Upson, of Ohio; Charles Ditto, of Illinois; and H. Buckwalter, of Pennsylvania.