Winchell, N.H.Upham, Warren2010-01-072010-01-071884https://hdl.handle.net/11299/56280Contains 43 plates and 52 figures.Summary of the geological and natural history studies carried out in Minnesota between 1872 and 1901. Published in 6 volumes. Vol 1 provides a history of geological study in Minnesota up to the time of this work and summarizes geologic and natural history information by county between 1872-1882.engeologynatural historyMinnesota Geological SurveylandformsImage