Some trivia. The Donn brothers were sons of William Sr. a carriage maker from Scotland who settled in Canton, IL. about 30 miles from Peoria. William Jr married Belle Thompson in 1878. By the age of 20 James was working as a gunsmith. In 1910 they both are living in Chicago. James was in walking distance of the major gun retailers in Chicago.

I found a reference on the web that I can not confirm, ie James Donn had a gun displayed at the 1893 Chicago Exposition.

Pete

http://www.damascus-barrels.com/Movie.html