In a December 15, 1846 letter from the Army Ordnance Officer in Washington, Dimick is praised for his "...great skill...and his success in the applying of new principles to firearms...his plan for rifles is now acknowledged to be the best extant.
Dimick opened his first establishment at 39 North Main St. and found himself in competition with some of the world's finest gunsmiths, including the famed Hawken Brothers.
This firm established themselves in St. Louis in 1849, and at once attracted a large share of public attention on account of the splendid assortment of fire-arms that compose their stock.
Mr. Dimick has passed twenty years in handling and manufacturing arms, and we only state a well known fact that he has not his superior in the world....The stock on hand of these gentlemen consists of every thing embraced in the paraphernalia of the sportsman- Guns, Pistols, Colt's Revolvers, Rifles, Bowie Knives, Dirks, Revolvers of different patterns, Fishing Tackle in the greatest abundance, Game Bags, etc H.E.
In selecting their stock, the practical knowledge of the members of the firm renders them valuable assistance, as they are thereby enabled to obtain the very best, and refuse all that does not fully answer their requirements....