The most troublesome part of the task was the collection of the necessary documents. These consisted of letters, journals, reports, and despatches, scattered among numerous public offices, and private families, in Europe and America. When brought together, they amounted to about three thousand four hundred manuscript pages. Contemporary newspapers, magazines, and pamphlets have also been examined, and careful search made for every book which, directly or indirectly, might throw light upon the subject. I have visited the sites of all the principal events recorded in the narrative, and gathered such local traditions as seemed worthy of confidence. I am indebted to the liberality of Hon. Lewis Cass for a curious collection of papers relating to the siege of Detroit by the Indians. Other important contributions have been obtained from the state paper offices of London and Paris, from the archives of New York, Pennsylvania, and other states, and from the manuscript collections of several historical societies. The late William L. Stone, Esq., commenced an elaborate biography of Sir William Johnson, which it is much to be lamented he did not live to complete. By the kindness of Mrs. Stone, I was permitted to copy from his extensive collection of documents such portions as would serve the purposes of the following History. To President Sparks of Harvard University, General Whiting, U. S. A., Brantz Mayer, Esq., of Baltimore, Francis J. Fisher, Esq., of Philadelphia, and Rev. George E. Ellis, of Charlestown, I beg to return a warm acknowledgment for counsel and assistance. Mr. Benjamin Perley Poore and Mr. Henry Stevens procured copies of valuable documents from the archives of Paris and London. Henry R. Schoolcraft, Esq., Dr. Elwyn, of Philadelphia, Dr. O’Callaghan, of Albany, George H. Moore, Esq., of New York, Lyman C. Draper, Esq., of Philadelphia, Judge Law, of Vincennes, and many others, have kindly contributed materials to the work. Nor can I withhold an expression of thanks to the aid so freely rendered in the dull task of proof-reading and correction. The crude and promiscuous mass of materials presented an aspect by no means inviting. The field of the history was uncultured and unreclaimed, and the labor that awaited me was like that of the border settler, who, before he builds his rugged dwelling, must fell the forest-trees, burn the undergrowth, clear the ground, and hew the fallen trunks to due proportion.