Goetzmann, W. H., Williams, G., Swanston, M., Lewis, I. (., & Land, J. (1992). The atlas of North American exploration: From the Norse voyages to the race to the pole. New York: Prentice Hall General Reference.

Goetzmann, William H., Glyndwr Williams, Malcolm Swanston, Isabelle (Cartographer) Lewis, and Jacqueline Land. The Atlas of North American Exploration: From the Norse Voyages to the Race to the Pole. New York: Prentice Hall General Reference, 1992.

Goetzmann, William H., et al. The Atlas of North American Exploration: From the Norse Voyages to the Race to the Pole. New York: Prentice Hall General Reference, 1992.