Columbia River basin site shows early evidence of first Americans

Stone tools and artifacts unearthed from an archeological dig in Idaho suggest that people lived in the area 16,000 years ago, more than a thousand years earlier than previously thought.

Columbia River, Location, Length, History, & Facts

Native People - Bill of Rights Institute

Did the First Americans Arrive by Land or by Sea? - The Atlantic

First Peoples Migration - Brady Bennon, Library

Comprehensive Plan for the Development of the Columbia River Basin - Barry Lawrence Ruderman Antique Maps Inc.

Columbia River - Wikipedia

Columbia River Treaty (1964)

Columbia River basin site shows early evidence of first Americans

Columbia River Tour

A history of the first Americans in 9½ sites