Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Duluth and Vicinity, St. Louis County, Minnesota, scale 1:24,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23362.pdf
Map of Minnesota showing localities of Cretaceous rocks described in the RI-5 report, scale 1 inch = about 35 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23378.pdf
Contour map (lines of equal elevation) of the present altitude of the Pre-Cretaceous unconformity (erosional surface cut into older rocks) in Minnesota, scale 1 inch = about 32 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23379.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Duluth and vicinity, St. Louis County, Minnesota, scale 1:24,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23360.pdf
Map of sample localities and described geologic sections (area of formal rock description), Minnesota River Valley, Brown, Redwood, and Renville Counties, Minnesota, scale 1 inch = 1 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23376.pdf
The First Quarter 1964 edition of the Geological Society of Minnesota (GSM) newsletter included an article on geology of Isle Royale, and various society notices.
The Spring Quarter 1964 edition of the Geological Society of Minnesota (GSM) newsletter reported on plans for the annual banquet in April, and reported the death of Frank Hitchcock, Macy L. Sprachner, and Henry S. Sommers, as well as articles on Mississippi Valley lead-zinc, fossils, and on rock-hounding in Mexico, and a listing of state geological surveys in the region.
The Fall/Winter 1964 edition of the Geological Society of Minnesota (GSM) newsletter included society notices, a report on a GSM display at a bank in Minneapolis, notice of a field trip to the Finger Lakes of New York, explanation of the hiatus in publication of the newsletter, and memorials to Mrs. Henry L. Woltman, Dr. Henry W. Woltman, Mrs. Anna Meuller Ermert, and Harry Sommers, announcement of a field trip to examine declining water levels in the west Metro, and reports on field trips to Moose Lake and the Minnesota River Valley.