Carnegie Institution of Washington. Dept. of Terrestrial Magnetism.

• Scientific results of cruise VII of the Carnegie during 1928-1929 under command of Captain J.P. Ault
• Description of the earth's main magnetic field and its secular change, 1905-1945
• Earth-current results at Tucson Magnetic Observatory, 1932-1942
• Ionospheric research at Huancayo Observatory, Peru, January, 1938-June, 1946
• Land and ocean magnetic observations, 1927-1944
• Ocean magnetic observations, 1905-1916
• I. Ionospheric research at College, Alaska
• Ionospheric research at Watheroo Observatory, Western Australia
• Magnetic results from Huancayo Observatory, Peru, 1922- December 1947
• Magnetic results from Watheroo Observatory, Western Australia, 1919-1947
• The geomagnetic field