| Smithsonian Institution, 1896. Annual Report of the Board of Regents of the Smithsonian Institution, to July 1895. Smithsonian Annual Report 1894-1895: 68-73
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| Smithsonian Institution, 1894. Annual Report of the Board of Regents of the Smithsonian Institution, to July 1894. Smithsonian Annual Report 1893-1894: appendix pp. 68, 69, 73
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