This 32-volume collection of journals and accounts by explorers and travelers in the American west was published over a 3-year period beginning in 1904 by Reuben Thwaites, as Secretary of the Wisconsin Historical Society.
Accounts of travel to the Great Lakes region are included in::
Volume 6 (Brackenridge)
Volume 8 (Evans)
Volumes 9 -12
Volume 19 (Ogden and Bullock)
Early Western Travels, 1748-1846 (32 volumes)