We located the series Indian Treaties, 1722–1869https://catalog.archives.gov/id/299798in the General Records of the United States Government (Record Group 11) that has been digitized in full and made available online via the Catalog. These digitized treaties may be explored by date or by tribe. Click on the hyperlinked series title and click the link for “Search within this series.” Type the name of the tribe or date in the search window. For each treaty, click on the file unit title to view digital images of the treaty and all related documents in the file unit. To view these documents individually, scroll down the page and click the link for “Search within this file unit.” Please see NARA’s web page titled American Indian Treaties: Catalog Links for easy access to the treaties you seek.
Another deeper dive along with what my colleague discussed regarding the actual treaties is in the commissioner's correspondence files - I say deeper because there is alot. The entire 962 roll microfilm series of letters received, which includes general letters but also reports, clippings, memos, and such - all organized by jurisdiction and thereunder by date received. Click on the hyperlink under "includes" to start hunting here;
There is a register of letters received for the above that can be browsed by date to help pin down which jurisdiction a letter was filed under, here;
We're slowly digitizing the superintendency records, those larger jurisdictions that would manage the Indian Agents in a certain area. For that early era and those tribal nations, the records of the Michigan Superintendency might be of use since the Wisconsin one wasn't stood up until 1836 - again organized by date and the document type mixed;