"Edward E. Ayer Manuscript Collection (Newberry Library)" . . . . . . . . . "ALS"@en . . . . "Correspondence"@en . . "Records and correspondence"@en . . "Aug. 6, 1772, letter from Wade and Keiuser to Sir William Johnson, reporting that the partners had left Niagara and were on their way to Montréal to purchase canoes and stores for a trading expedition to outposts on the Grand River."@en . . "History"@en . . "Sources"@en . . . . . "Osswigachey [i.e. Oswegatchie, N.Y.], to Sir William Johnson, Johnson Hall, [N.Y.]"@en . "Newberry Library." . .