September 19, 1836
At Green Bay, Commissioner John F. Schermerhorn and chiefs and headmen of the Stockbridge and Munsee concluded a treaty concerning their lands on the east side of Lake Winnebago. The treaty compilation identifies this agreement as not ratified.
The regionGrade B · 1 independent source
The evidence
“Treaty with the Stockbridge and Munsee, 1836 Treaty with the Stockbridge and Munsee, 1836 Articles of a Treaty, made and concluded at Green Bay, Wisconsin Territory, September 19, 1836, by John F. Schermerhorn, Commissioner on the part of the United States, and the Chiefs and head men of the Stockbridge and Munsee Tribes of Indians, interested in the Lands, on Winnebago Lake, provided for them in the Menomonee Treaty of February 1831, and assented to by them, October 27, 1832, and who now reside on Winnebago Lake, and those that are still in the state of New York. Article First. The chiefs and head men of the said Stockbridge and Munsee Tribes of Indians, whose names are hereunto annexed, in behalf of their people, hereby cede, relinquish, & convey to the United Stat”
https://treaties.okstate.edu/treaties/treaty-with-the-stockbridge-and-munsee-1836-22745
treaties.okstate.edu, https://treaties.okstate.edu/treaties/treaty-with-the-stockbridge-and-munsee-1836-22745
Grade B: Found on an institutional web page