The National Geographic Magazine, 109, Number 2 (February 1956).
Soft Cover, Washington: National Geographic Society, 1956. Fair with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1956. Fair with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1959. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1965. Very Good with no dust jacket.
Soft Cover, Washington, D.C. National Geographic Society, 1958. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1968. Very Good with no dust jacket.