Monsoon & trade wind chart of the Indian Ocean [cartographic material] / by M.F. Maury, L.L.D. Comr. U.S.N., Superintendent of U.S.N. Observatory ; compiled by Lieuts. J.J. Guthrie ... [et al.] ; and projected by Lt. R.L. May from materials in the Bureau of Ordnance and Hydrography, Captain D.N. Ingraham, Chief of the Bureau.Maury, Matthew Fontaine, 1806-18731859 [i.e. 1860]"Series B."Equatorial winter monsoon -- Winds in February -- Winds in August.The trade wind charts were released as series B a part of Maury's "Wind and current charts", series A-F. Two sheets were produced, one for the Atlantic and the other for the Incartographic