Treaties between the various Indian tribes and the U.S. government can be found in the United States Statutes At Large. For a current list of federally recognized tribes, check the Federal Register.
Indian affairs: laws and treaties. Compiled and edited by Charles J. Kappler. U.S. GPO, 1975-79. Vols. 1-5, 1904-1941. Vols. 6-7, laws compiled through 1970. [KF8203 .U53 1975]
Kappler's Indian affairs. (see Indian affairs: laws and treaties, vol. 6-7.) [KF8203 .U53 1975]
Prucha, Francis Paul. American Indian treaties: the history of a political anomaly. Berkeley: University of California Press, c1994. [KF8205 .P75 1994]
Wilkinson, Charles F. and John M. Volkman. Judicial Review of Treaty Abrogation: As Long As Water Flows or Grass Grows Upon the Earth' - How Long a Time is That? 63 California Law Review 601-661 (1975).