Merrick, H. H. Lands and peoples. The world in color. Volume 6: Canada, the United States. New York: Grolier.

Merrick, Helen Hynson. Lands and Peoples. The World in Color. Volume 6: Canada, the United States. New York: Grolier.

Merrick, Helen Hynson. Lands and Peoples. The World in Color. Volume 6: Canada, the United States. New York: Grolier.