U. S. Department of Agriculture Bureau of Biological Survey, North American Fauna No. 47 (August 21, 1924) : Revision of the American Pikas (Genus Ochotona).
Softcover, Washington, D. C. Government Printing Office, 1924. Good with no dust jacket.
Softcover, Washington, D. C. Government Printing Office, 1924. Good with no dust jacket.
Hard Cover, London - New York: J. M. Dent, E. P. Dutton, 1966. Reprint. Good in Good dust jacket.
Illustrated by Sandra Brooks-Mathers. Hardcover, Chapel Hill: The University of North Carolina Press, 2004. First Edition. Fine in Very Good+ dust jacket.
Hardcover, Chapel Hill: The University of North Carolina Press, 1968. Eighth Printing. Very Good in Good dust jacket.
Hardcover, New York: Orange Judd Company, 1904. Second Edition. Good with no dust jacket.
Illustrated by Rudolf Koch, Frik Kredel, Emil W&ou. Hardcover, Leipzig: Im Bärenreiter Verlag zu Kassel, 1932. Good with no dust jacket.
Hardcover, Croton-on-Hudson, NY, U.S.A. Van Cortlandt Press, 1972. Reprint. Very Good in Good dust jacket.
Softcover, New York: American Agora Foundation, 2008. Very Good with no dust jacket.
Softcover, Knoxville, Tennessee: Mountaineer, Inc., 1941. Good with no dust jacket.
Flexible leatherette, New York: Knopf, 1980. First Edition; First Printing. Very Good with No dust jacket as issued.
Soft Cover, Washington: National Geographic Society, 1945. Very Good with no dust jacket.
Softcover, Chapel Hill, NC: Niche Publishing, 2007. First Edition; First Printing. Fine with no dust jacket.
Hardcover, New York: Alfred A. Knopf, 1972. First American Edition. Very Good in Very Good dust jacket.
Hardcover, Englewood Cliffs, NJ: Prentice-Hall, 1975. 1st Thus; First Printing. Very Good in Very Good dust jacket.
Softcover, Tokyo: Cross Continent Co., 1960. Good with No dust jacket as issued.
Softcover, Urbana, IL: State of Illinois, 1929. Fair with no dust jacket.
Hardcover, New York: G. P. Putnam's Sons, 1939. First Edition. Very Good with no dust jacket.
Softcover, Rio de Janeiro: Tempe Brasileira, 1978. Second Edition. Very Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1948. Very Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1946. Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1947. Very Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1943. Fair with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1945. Very Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1948. Very Good with no dust jacket.
Soft Cover, Washington: National Geographic Society, 1957. Good with no dust jacket.