Mr. Sparks, as the biographer of Washington and as the collator of his papers, and as a most indefatigable searcher after the whole truth in our early history, enjoyed extraordinary advantages, so that his statements in all such matters should always command the utmost confidence. There is in the possession of the Pennsylvania Historical Society a draught of "the Monongahela and Youghiogany rivers" taken by Joseph Shippen, Jr., in 1759.[47] On this draught the route of General Braddock is distinctly laid down from Cumberland to Stewart's Crossings, now Connelsville, and thence to a point about twelve or fourteen miles, nearly due north, and of course some four or five miles east of the Youghiogany. From that point the line of march is not laid down until within about six miles of the Monongahela river, at Braddock's first ford, about one mile and a half below McKeesport; from that point it is distinctly traced across the Monongahela twice to the field of battle. As Mr. Shippen was Brigade Major in General Forbes' army, and in that capacity visited this place within four years after Braddock's defeat, we may well suppose that he had accurate information as to the route of that unfortunate General. Extract of a letter from Jared Sparks, Esq., to the editor of the _Olden Time_. "Salem, Mass., Feb. 18th, 1847. "Dear Sir:--There is a copy of the 'Memorial' which you mentioned in the Library of Harvard College which I believe is complete. I shall obtain it soon, and will have the missing pages copied and forward to you the manuscript. I suppose you wish it sent by mail. I once compared this translation with the original[48] and found it clumsily executed, but the substance is probably retained. "Having heretofore examined with care the details of Braddock's expedition, I am persuaded that the following, as far as it goes, is a correct account of his march from Gist's plantation: "On the 30th of June the army forded the Youghiogany at Stewart's Crossings and then passed a rough road over a mountain. A few days onward they came to a great swamp which detained them part of a day in clearing a road. They next advanced to Salt Lick Creek, now called Jacob's Creek, where a council of war was held on the 3d of July to consider a suggestion of Sir John St. Clair that Colonel Dunbar's detachment should be ordered to join the main body. This proposal was rejected on the ground that Dunbar could not join them in less than thirteen days; that this would cause such a consumption of provisions as to render it necessary to bring forward another convoy from Fort Cumberland; and that in the meantime the French might be strengthened by a reinforcement, which was daily expected at Fort Duquesne--and moreover; the two divisions could not move together after their junction.