Results of Magnetic Observations Made by the Coast and Geodetic Survey Between July 1, 1902, and June 30, 1903

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey Between July 1, 1911, and December 31, 1912

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey in 1913

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey in 1923

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Results of Magnetic Observations Made by the Coast and Geodetic Survey

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey in 1914

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey in 1922

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey in 1921

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Results of Magnetic Observations Made by the United States Coast and Geodetic Survey in 1919

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