00853cam a2200217 4500 1056051315 TxAuBib 20141219120000.0 131024|||||||||||||||||||||||||||||eng|u 9780062236753 006223675X KHPB566 KHP566 TxAuBib Menzies, Gavin, Hudson, Ian. Who discovered America. New York, N.Y. : HarperCollins Publishers. 308 p., 23.5 cm. While we know that humans migrated on foot across present day Alaska, emerging new evidence suggests seafarers reached the American continents thousands of years earlier, helping to develop sophisticated civilization. 20131024. Prehistoric peoples North and South America. America History.