Split Seconds in the Lives of Birds. Article published in National Geographic Magazine, Volume 105, Number 5 (May, 1954), pp. 681-706.
Ephemera, Washington, D.C. National Geographic Society, 1954. Good with No dust jacket as issued.
Ephemera, Washington, D.C. National Geographic Society, 1954. Good with No dust jacket as issued.
Ephemera, Washington, D.C. National Geographic Society, 1953. Good with No dust jacket as issued.
Softcover, Blacksburg, Virginia: Virginia Polytechnical Institute and State University, 1984. Very Good with No dust jacket as issued.
Illustrated by Carolyn Hoss. Softcover, United States: John O. Fussell III, 1985. Good with no dust jacket.
Softcover, Asheboro, NC: Down Home Press, 1999. First Edition; First Printing. Very Good- with No dust jacket as issued.
Softcover, Asheboro, NC: Down Home Press, 1995. First Edition; First Printing. Very Good with No dust jacket as issued.
Softcover, Washington, D. C. Government Printing Office, 1918. Fair with no dust jacket.
Softcover, Washington, D.C. National Geographic Society, 1932. Good with No dust jacket as issued.
Soft Cover, Washington: National Geographic Society, 1953. Good with no dust jacket.
Softcover, Washington, D.C. National Geographic Society, 1945. Good with No dust jacket as issued.
Soft Cover, Washington: National Geographic Society, 1953. Good with no dust jacket.
Softcover, Washington, D.C. National Geographic Society, 1932. Good with No dust jacket as issued.
Softcover, Washington, D.C. National Geographic Society, 1936. Good with No dust jacket as issued.
Softcover, Washington, D.C. National Geographic Society, 1932. Good with No dust jacket as issued.
Softcover, Washington, D.C. National Geographic Society, 1938. Good with No dust jacket as issued.
Softcover, Washington, D.C. National Geographic Society, 1938. Good with No dust jacket as issued.
Soft Cover, Washington: National Geographic Society, 1967. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1961. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1958. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1958. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1958. Good with no dust jacket.
Hardcover, Nairobi: Patwa News Agency Ltd., 1956. Sixth Printing. Good in Fair dust jacket.
Softcover, Washington, D. C. Government Printing Office, 1926. Good with no dust jacket.
Softcover, Washington, D. C. Government Printing Office, 1927. Good with no dust jacket.
Softcover, Washington, D. C. Government Printing Office, 1924. Good with no dust jacket.