Observations on terrestrial magnetism and on the deviations of the compasses of the United States iron clad Monadnock during her cruise from Philadelphia to San Francisco, in 1865 and 1866. - Harkness, William, 1837-1903. ([Washington, Smithsonian Institution, 1873)
Keywords: Geomagnetism -- Observations; Magnetism of ships; Monadnock (Ship)