It seems proper to interpolate here some account of the expedition conducted by Major Stephen H. Long of the topographical engineers of the army, in 1823, to the valleys of the Minnesota and Red rivers. Six years before, that officer had made an uneventful journey to St. Anthony’s Falls, of which he left a graphic and appreciative description. His party, escorted by a detail of soldiers, left Fort Snelling on July 9 with Joseph Renville as interpreter and guide. At Traverse des Sioux, Long abandoned his canoes and set out overland by the well-worn trail for Lake Traverse, where he was welcomed at the headquarters of the Columbia Fur Company. On August 2 Long reached Pembina, where he established a monument to mark a point astronomically determined in the international boundary. His instructions had been to strike east from Pembina and trace the boundary to the Lake of the Woods. This he found to be impracticable. Putting his people into bark canoes, he descended the Red River past Fort Garry to Lake Winnipeg, traversed the south arm of that water, and ascended the Winnipeg River to Rat Portage on the Lake of the Woods.
The homeward journey by the old Dawson route to Lake Superior, along the north shore to the Sault Sainte Marie and thence by the lower lakes and the Erie Canal, was rapidly made without notable incident. Professor William H. Keating of the University of Pennsylvania, who was geologist of the expedition, published a narrative abounding in varied and interesting knowledge. It will ever remain indispensable to the historian of the period and region.
Major Long had been accompanied from Fort Snelling to Pembina by an Italian gentleman of a romantic and enterprising nature, Giacomo Constantino Beltrami by name. Little is known of his early life beyond the facts that he had held military and civil appointments, and had, for reasons not revealed, found it desirable to absent himself from Italy. He came to America full of zeal to be the discoverer of the true source of the Mississippi, and thus place himself in the company of great Italian explorers. Agent Taliaferro came upon him in Pittsburg and offered to further his ambition. They reached Fort Snelling on the 10th of May, 1823, by the steamboat Virginia, the first steam vessel to reach that post. The crowd of wondering Indians gathered on the levee were sufficiently impressed by the bulk of the white man’s fire canoe; but the scream of her steam whistle, opportunely let out, sent them scampering far off on the prairie.