Winchell, N.H.Grant, UlyssesTodd, JamesUpham, WarrenWinchell, Horace2010-01-082010-01-081899https://hdl.handle.net/11299/56292Contains 31 plates and 48 photos and 114 figures.Summary of the geological and natural history studies carried out in Minnesota between 1896 and 1898. Published in 6 volumes. Vol 4 summarizes geologic and natural history information by county.engeologynatural historyMinnesotalandformsMap