The National Geographic Magazine, Volume 132, Number 1 (July 1967).
Soft Cover, Washington: National Geographic Society, 1967. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1967. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1959. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1961. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1968. Very Good with no dust jacket.