Mammoth bones and broken stones the mystery of North America's first people - Harrison, David L. (Boyds Mills Press, 2010)
Includes bibliographical references (p. 47) and index
Who are we looking for? -- Nature provides a bridge -- Mysterious Clovis culture -- Did others get here first? -- Proving the clues are right -- Glimpses of our deep past -- Boat people -- Looking in an ancient mirror