New York,Press of J. J. Little & co.,1889 | Library of Congress
Cambridge: Printed for the Museum, 1889.
Boston, D. C. Heath & Co., 1890.
Philadelphia: Published by the Author, 1885-1935.
Washington: U.S. Geological Survey, 1903.
Washington,: Govt. print. off., 1903.
Boston, Ginn and Heath, 1880.
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