Some here might find this of interest
http://www.trapshooters.com/threads/an-incomplete-history-of-trap-doubles.422185/

The first GAH Doubles Competition was in 1908
http://library.la84.org/SportsLibrary/SportingLife/1908/VOL_51_NO_17/SL5117024.pdf
Won by H.E. Buckwalter (Lefever) of Royersford, Pa. with 18x20



Forest & Stream 3-6-1909