Rolla Heikes used a Parker at the 1900 GAH at Live Birds, finished out of the money, and went back to a Remington, and won the Interstate Association’s First Annual GAH at Targets June 1900
http://www.la84foundation.org/SportsLibrary/SportingLife/1900/VOL_35_NO_14/SL3514012.pdfGrand American Handicap at Targets, open to all. 100 Blue Rocks, handicaps 14 to 25 yards, high guns, not class shooting. The match was shot from two Magautraps, a Sergeant system, and a five expert system, 25 targets on each set:
R. O. Heikes, Dayton, O., 22 yds. Remington - 91
Nov. 10, 1900
Sporting Life“Heikes is now shooting a new single trigger Remington hammerless gun. He divided first money with Fred Gilbert and Elmer Neal in the 25 bird sweep at Peru, Ind., on October 31 with 24 dead.”
Nov. 17, 1900
http://library.la84.org/SportsLibrary/SportingLife/1900/VOL_36_NO_09/SL3609014.pdf E. H. Tripp, the Indianapolis trap shot, tells a "hard luck" poker story- He was sitting in a quiet game with a few of the trap shots one night at St. Louis. Everything had gone the other way with him, and the boys had been "doing something."
At last he got a handful of aces in the deal, and he said to himself, -“Here is where I get even." He started to bluff the others, but just at that moment Colonel Courtney. who up to that time had been a quiet onlooker, began to tell about a new Remington hanmerless gun that had but one trigger to pull both barrels. He got the other fellows so interested in that gun that they forgot all about the poker game, and Tripp got but five measly chips out of his four aces.
“RoIIa Heikes is now working his new single trigger Remington hammerless gun…”
He appears to have been using the same gun at the National Sportsmen’s Association Tournament March 1901
http://www.la84foundation.org/SportsLibrary/SportingLife/1901/VOL_36_NO_25/SL3625013.pdfR.O. Heikes (Remington Hammerless), Ed Banks (Winchester Repeater), W.R. Crosby (Smith), Jack Fanning (Smith), possibly B. LeRoy (Remington)
He used a Parker for the Anglo-American match in June 1901, but went back to his Remington afterwards.
Feb. 1, 1902
Sporting Lifehttp://www.la84foundation.org/SportsLibrary/SportingLife/1902/VOL_38_NO_20/SL3820012.pdf"...using a new Remington single trigger hammerless gun..."
Then used a LC Smith to take 3rd in the (last) GAH at Live Birds in Kansas City.
Could it have been a Fulford Single Trigger?
January 2, 1904 "The American Field" courtesy of David Noreen.

Fulford won the 1898 Grand American Handicap at Live Birds and was a Remington Rep
http://www.la84foundation.org/SportsLibrary/SportingLife/1898/VOL_31_NO_02/SL3102016.pdfE. D. Fulford, the winner, needs no introduction to the shooting men of this country. He has been at the traps as a professional shot for five or six years and is at present a shooting representative of the Remington Arms Co., and used a Remington hammerless gun weighing 7 3/4 lbs., 3 1/2 Schultze powder in U.M.C. Trap shells, three inches in length; 1 1/4 oz. No. 7 shot.
U.S. Patents for single triggers assigned to Remington Arms Co., or which illustrate a Remington Hammerless, include those of C.E. DeLong, E.D. Fulford, E.H. Thorneley, and G.E. Witherell. (Courtesy of David Noreen)
Just ran across the "Philadelphia Single Trigger" in a 1906
Forest & Stream
