Results of observations made at the Coast and geodetic survey magnetic observatory at Baldwin, Kansas, 1901-1904, [1905-1906, 1907-1909]
by Daniel L. Hazard, computer, Division of terrestrial magnetism.

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Item Link Original Source
Full view   1901-04 The Ohio State University
Full view   1901-04 Princeton University
Full view   1901-1904 University of Michigan
Full view   1905-06 The Ohio State University
Full view   1905-06 Princeton University
Full view   1905-1906 University of Michigan
Full view   1907-09 Princeton University
Full view   1907-1909 University of Michigan