Box 17, Folder 4: Lake Michigan, 1859-1872

Mean Max & Min levels of the water in Lake Michigan from July 14th 1861 to June 30th 1862 (inclusive) The numbers indicate the quantities below the high water of 1838-

[Data Table]. 1864.

Mean Max & Min levels of the water in Lake Michigan from July 14th 1861 to June 30th 1862 (inclusive) The numbers indicate the quantities below the high water of 1838-

[Data Table]. 1864. Continued.

Showing the mean level & Intermediate rise & fall of L. Michigan from Aug. 1860 to June 1862: & Rise-fall

Mean Max & Min Levels of the water in Lake Michigan from July 12th 1863 to December 31th 1863 Referred to the high water of 1838 in feet & lengths.

[Water levels Table].

[Table showing the yearly mean, monthly mean and range of water level on Lake Michigan for 5 years. Also the mean height of the water from May 12th to Nov. 1st? or during the period of navigation. The figures have [superior?] in [jut?] & tenths below the high water of 1838.-]

I. Observations to ascertain whether there is a Tide on the Lakes, made by I.A. Lapham; to which is added Meteorological Obsevations by E.S. Marsh M.D. Milwaukee 1846-

[Table].