"Most better U.S. doubles in damascus used British damascus barrels...i.e., Lefever, LC, Parker"
Oops- I missed that, and GregSY's comment re: Parker is noted.
Please scroll to the bottom here re: Parker damascus
http://docs.google.com/Doc?id=dfg2hmx7_268gzhjpd4dIt is likely that Parker obtained lifter damascus from England, and in the mid to late 1870s started getting damascus tubes from Liege, while using up the English barrels on hand.
And the vast majority of US maker's tubes, and many British maker's, came from Belgium. See:
http://docs.google.com/Doc?id=dfg2hmx7_69dxb227c6http://docs.google.com/Doc?id=dfg2hmx7_28dvjzkhgfhttp://docs.google.com/Doc?id=dfg2hmx7_72xs856hdf"In 1900, Jean Lejeune of Nessonvaux could supply a pair of ‘Boston’ tubes for 10 francs or about 2 dollars. The 1902 Sears, Roebuck & Co. catalog lists the Remington 1894 A grade with “two stripe Damascus” for $35. According to Sir Cecil Herstlet, His Britannic Majesty’s Consul General in Belgium,
850 tons of Damascus were produced in 1906."