Schwartz, G.M.2010-09-012010-09-011947-10The Conservation Volunteer, September/October 1947https://hdl.handle.net/11299/93588One of a series of articles that appeared between 1947 and 1961 written by staff of the Minnesota Geological Survey and the University of Minnesota.Brief summary of the geology of Jay Cooke State Park, southwest of Duluth.engeologystate parksMinnesotaSt. Louis riverArticle