Co-author, Mind the Light, Katie (Cypress Communications, 2005)

Co-author, Maine Lights: Documentation of Their Past (Cypress Communications, 2004)

Co-author, Nineteenth Century Lights: Historic Images of American Lighthouses (Cypress Communications, 2000)

From Slavery to Freetown: Black Loyalists after the American Revolution (McFarland, 1999)

Co-author, Women Who Kept the Lights: An Illustrated History of Female Lighthouse Keepers (Cypress Communications, 1994; second edition, 2001)

The Land and People of Afghanistan (J. B.Lippincott, 1962, revised edition, 1973; completely new edition, HarperCollins, 1989)

The Land and People of the Arabian Peninsula (Lippincott, 1977)

The Land and People of Sierra Leone (J. B. Lippincott, 1974)

The Land and People of Liberia (J. B. Lippincott, 1971)

The Land and People of Malaysia (J. B. Lippincott, 1968)

The Noble and Noble African Studies Program (Noble and Noble, 1971)

Bisha of Burundi (Thomas Y. Crowell, 1973)

Salah of Sierra Leone (Thomas Y.Crowell, 1975)

When the Great Canoes Came (Pelican Publishing Company, 1993)