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- [4] Annual report of the director, U. S. coast and geodetic survey to the secretary of commerce for the year 1921 PETERMANNS MITTEILUNGEN, 1923, 69 (7-8): : 192 - 192
- [5] Report 1896/97 U. S. Coast and Geodetic Survey, pt 1-2 PETERMANNS MITTEILUNGEN, 1900, 46 (12): : A63 - A63
- [9] U. S. Coast and Geodetic Survey, Report of the Superintendent of -, showing the Progress of the Work from July 1, 1906 to Juni 30, 1907 PETERMANNS MITTEILUNGEN, 1908, 54 (12): : A173 - A174
- [10] NOTES OF EXPLORATION BY THE U. S. GEOLOGICAL SURVEY BULLETIN OF THE AMERICAN GEOGRAPHICAL SOCIETY OF NEW YORK, 1902, 34 (05): : 454 - 457