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Harriman Alaska Expedition, Vol. II, Bogoslof, our Newest Volcano, by C. Hart Merriam, New York, 1901.
Expedition to the Aleutian Islands, 1907. T. A. Jaggar, Jr., in The Technology Review, 1907, Boston.
Recent Changes in Level in the Yakutat Bay Region, Alaska, by R. S. Tarr and Lawrence Martin, in Bulletin of the American Geological Society, 1906.
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Development in Dimensions of vessels, Elmer L. Corthell, Tenth International Navigation Congress, 1905.