This volume is a collection of several different kinds of important historical documents published by the Michigan Pioneer and Historical Society. It contains another installment of materials selected from the Canadian Archives at Ottawa. These documents illuminate British influence, perspectives, and activities in the Great Lakes region during the War of 1812. The materials published here consist chiefly of reports and correspondence among British officers stationed at frontier posts in Canada and Michigan and with their commanding officers. The documents shed light on the island of Mackinac's strategic importance, General Hull's surrender of Detroit, and British-Indian relations. They are divided into five sections: 1) Relations with the United States and events preliminary to war, 2) Declaration of War--Campaign of 1812, 3) Campaign of 1813, 4) Campaign of 1814, 5) Appendix with elaborate notes to Second Edition. They include an extract discussing the state of the province of Upper Canada, and a biography of General Henry Procter. An appendix with notes and an index appear at the end of the volume.