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      Field Trip Guidebook for Cambrian-Ordovician Geology of Western WisconsinWith special papers: Lithologic Cycles in Lower Paleozoic Rocks of Western Wisconsin, M.E. Ostrom; and Lithostratigraphy of the Prairie du Chien Group, R.A. Davis, Jr.
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      Cambrian Stratigraphy in Western WisconsinNotes accompanying a 1966 conference field trip covering geology between Chippewa Falls and Trempealeau and between Elroy and Portage. Routes shown.
 
      
      