Documents of American Indian Diplomacy: Treaties, Agreements, and Conventions, 1775-1979 is the two volume compilation published by the University of Oklahoma Press in 1999. This important reference work gathers in two volumes more than 350 treaties and agreements including treaties made prior to the founding of the United States and those made between states and Indian Nations. Treaties made between foreign states (Spain, Great Britain, and Mexico) and Indian Nations and those made between confederate states and Indian Nations are also included. Railway agreements seeking rights-of-way through Indian land are included. Some treaties between Indian Nations and the United States were not ratified. These unratified agreements are included. Each entry includes its source and each chapter includes a brief introduction about the selections and context. The compilers, Vine Deloria and Raymond DeMallie, include an index of the treaty titles and individual Indian Nations. Unfortunately the signatories of the agreements and treaties are not indexed. The index for both volumes appears in volume two. On the whole this is a valuable reference work for college and university libraries as well as anyone interested in treaties.