Hydrographical basin of the upper Mississippi River from...

Título: Hydrographical basin of the upper Mississippi River from astronomical and barometrical observations surveys and information [Material cartográfico] / by J.N. Nicollet in the years 1836, 37, 38, 39 and 40 assisted in 1838, 39 & 40 by Lieut J.C. Fremont of the Corps of Topographical Engineers under the superintendence of the Bureau of the Corps Topographical Enginneers and autorized by the War Department ; reduced and compiled under the direction of Col. J.J. Abert in the Bureau of the Corps of Topl. Engrs. by Lieut. W.H. Emory from the map published in 1842 and from other authorities in 1843