Treaty between the United States of America and Chippewa Indians of the Mississippi Concluded March 19, 1867 Ratification Advised with Amendment April 8, 1867 Amendment Accepted April 8, 1867 Proclaimed April 18, 1867, 1867-03-19. Native American Treaties Collection, MSS-039. Manuscripts. https://aspace.ll.georgetown.edu/public/repositories/3/archival_objects/2758 Accessed August 02, 2025.