The Congressional Record is the official record of the proceedings and debates of the United States Congress. It is published daily when Congress is in session. The Congressional Record began publication in 1873. Debates for sessions prior to 1873 are recorded in The Debates and Proceedings in the Congress of the United States (1789-1824), the Register of Debates in Congress (1824-1837), and the Congressional Globe (1833-1873)

Organized into four sections, the twelve chapters of Rivers of Change are concerned with prehistoric Native American societies in eastern North America and their transition from a hunting and gathering way of life to a reliance on food production. Written at different times over a decade, the chapters vary both in length and topical focus. They are joined together, however, by a number of shared “rivers of change.”