Survey and excavations in southern Ecuador /

by Collier, Donald 1911-1995
Published 1943

Ancient Ecuador : culture, clay and creativity 3000-300 B. C. /

by Lathrap, Donald Ward 1927-1990, Lathrap, Donald Ward 1927-1990, Collier, Donald, Chandra, Helen
Published 1976

Indians before Columbus : twenty thousand years of North American history revealed by archeology. /

by Martin, Paul Sidney 1899-1974
Published 1947