240 ESSAYS IN COLONIAL HISTORY Stevenson's ventures began about 1745, just when mar- ketable grain was increasing in the neighborhood and the back-country trade was opening. Though Eddis's account seems to say the original cargoes came from the surrounding country, it was un- doubtedly the "peculiar advantages . . . with respect to the trade of the frontier counties" that were responsible for succeeding events. The first mention of back-country trade in connection with Baltimore is in the preamble of an act uniting Jones Town with Baltimore Town in 1745. "The said Towns," reads the act, "are very conveniently situated in regard to the back Inhabitants, and Naviga- tion on the Head of the North-West Branch of Patapsco River."48 An act enlarging the town in 1747 repeats the idea by establishing a fair as "an Encouragement to the back Inhabitants and others, to bring Commodities there."" A pledge circulated in 1751 to raise subscrip- tions for a market house also says that the situation of the town "renders it convenient for navigation and trade, as well with the inhabitants of Baltimore and Anne Arun- del counties as the back settlements of this province and Pennsylvania."" In the same year, according to the Maryland Gazette, sixty wagons loaded mostly with flax- seed, were brought in from the back country within two days.49 Such was the renown of this progress that Gov- ernor Sharpe made it an early duty to visit the town; and though his expectations had been built too high, he saw clearly enough that because of "the extensive Country beyond it" Baltimore would outstrip Annapolis in trade.47 These statements leave no doubt that about 1745