New York : Clarion Books, c2007.
vii, 88 p. : ill. (chiefly col.), map ; 25 cm.
Includes bibliographical references (p. 83-85) and index.
Before Columbus -- Admiral of the ocean sea -- Did China discover America? -- Leif the lucky -- The not-so-new world -- Who really discovered America?
"For a long time, most people believed that Christopher Columbus was the first explorer to 'discover' America--the first to make a successful round-trip voyage across the Atlantic. But in recent years, as new evidence has come to light, our understanding of history has changed. We know now that Columbus was among the last explorers to reach the Americas, not the first"--Book jacket.