Not sure exactly what you are looking for, but this site has Removal rolls: (99+) Potawatomi Removal Muster Rolls 1833-1840. | Larry Wyckoff - Academia.edu
Ancestry has a number of Potawatami censuses digitized, if you go to the card catalog and put in Indian Census as keywords, then select U.S., Indian Census Rolls 1885-1940. At the right there is a drop-down and there are three rolls that include the Potawatami.