The official 1873 founding document of the Minnesota Academy of Natural Sciences (later to become the Minnesota Academy of Science) contains its original Constitution and By-Laws. Article II states that, It shall be the object of the Academy to observe and investigate natural phenomena; to make collections of specimens illustrating the various departments of science; to name, classify, and preserve the same; also, to discuss such questions as shall come within the province of the Academy. The By-Laws direct the establishment of a museum, as well as regular meetings at which scientific investigations will be communicated either orally or in writing.
This hand-written "Historical Sketch," labeled in different writing [By Newton H. Winchell], contains an incomplete account of the Minnesota Academy of Natural Sciences' 1873 founding and activities in its early years. The approximate date is 1886, as it refers to the 13 years life of the M. A. of N. S. It states that the Academy has 175 members, summarizes its museum specimens, and mentions its public lectures and a few scientific contributions. See the transcript for the full text.
This hand-written document, labeled in different writing [By Newton H. Winchell], contains a brief and incomplete account of the Minnesota Academy of Natural Sciences' founding. The approximate date is 1890, as it refers to the 17 years of the Academy's existence. It includes a list of early members, first elected officers, and honorary members. The death of Dr. A.E. Ames, the Academy's first Corresponding Secretary, is noted. See the transcript for the full text.
Map showing the Pioneer iron mine, surveyed July 13, 1889, scale 1 inch = about 6.25 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23265.pdf
Map showing iron mines in the Vermilion range, scale 1 inch = about 0.12 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23264.pdf
Map of northeastern Minnesota showing iron regions, scale 1 inch = about 4.5 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23263.pdf
Physical Science Laboratory in Old Main BuildingOld Main opened in 1874 as the main building of St. Cloud State. Old Main was demolished in 1950 after the completion of Stewart Hall.
The 1899 annual meeting of the Minnesota Academy of Natural Sciences took place at the Public Library Building in Minneapolis on January 3rd, 1899. This program shows 5 scientific talks, ranging from Unusual Occurrences of Copper in Minnesota to The Sugar Beet Industry at St. Louis Park. The agenda also includes reports and the election of officers. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
Map showing the Pioneer iron mine, surveyed July 13, 1889, scale 1 inch = about 6.25 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23265.pdf
Sheet 2, Map of the Surface (glacial landforms) Formations and agricultural conditions of northeastern Minnesota, scale 1:500,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23267.pdf
Map of East Central Minnesota showing location of rock outcrops (location of rocks exposed at the land surface), scale 1 inch = 10 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23269.pdf
Map of the principal part of the Cuyuna Iron-ore District, showing the distribution of known iron-bearing rocks and lines of maximum magnetic attraction, scale 1 inch = 1 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23270.pdf
Map and sections showing the geology and workings of the Rowe Mine, Cuyuna Iron-ore District, surveyed in July, 1915, scale 1 inch = about 130 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23271.pdf
Map and sections showing the geology and workings of the Pennington, Armour No. 1, and Armour No. 2 Mines, Cuyuna Iron-ore District, Minnesota, surveyed in July, 1915, scale 1 inch = about 130 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23272.pdf
Map and sections showing the geology and workings of the Thompson Mine, Cuyuna Iron-ore District, surveyed July, 1915, scale 1 inch = 130 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23273.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Eastern Mesabi District, Minnesota, scale 1:31,250. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23278.pdf
Peat Deposits of Beltrami County, Minnesota, showing location of soundings and depth of peat and topography of the surface of the bogs north of Red Lake, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23275.pdf
Peat Deposits of Koochiching County Minnesota, showing locations of drainage ditches, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23276.pdf
Map showing Peat Deposits of Itasca County Minnesota, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23277.pdf
Sheet 3, Map of the Surface (glacial landforms) Formations and agricultural conditions of the southern half of Minnesota, scale 1:500,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23268.pdf
Longitudinal Section through the Biwabik and Gunflint Formations, scale 1 inch = 1.5 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23280.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Western Mesabi District, Minnesota, scale 1:62,500. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23279.pdf
Geologic map of Minnesota, scale 1:500,000, northern half of Minnesota. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22594.pdf
Geologic map of Minnesota, scale 1:500,000, southern half of Minnesota. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22595.pdf
This short historical sketch summarizes the 1873 founding and early years of the Minnesota Academy of Natural Sciences and gives a first-hand account of its 1932 re-founding as the Minnesota Academy of Science. It was written by its 1932-33 president, W. A. Riley, and was published in the Front Matter of the Journal of the Minnesota Academy of Science, 1934, Vol. 5 No.4, pp. 3-4.
The second annual meeting of the Minnesota Academy of Science took place at the Mayo Clinic Building on April 21, 1934. This program shows 9 scientific talks, on topics ranging from An Indian Rock Shelter in the St. Croix to The Ballistics of Gun Shot Wounds. In addition to the business meeting, there was also an address given by Dr. W. J. Mayo. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The third annual meeting of the Minnesota Academy of Science took place at the University of Minnesota in Minneapolis on April 13, 1935. This program shows 8 scientific talks, on topics ranging from Scientific Concentrates to Soil Erosion Demonstration Areas in Southeastern Minnesota. In addition to the business meeting, there was also a talk by Mr. U. G. Purssell, former head of Minneapolis Weather Bureau, titled Fifty Years Experience in the Weather Bureau. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
East-West Cross Sections of the Metropolitan Area, scale 1 inch = about 15,000 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23282.pdf
North-South Cross Sections of the Metropolitan Area, scale 1 inch = about 13,000 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23283.pdf
Map of the Glacial (Quaternary glacial and stream sediments) Deposits of the Metropolitan Area, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23284.pdf
Structural Contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Minneapolis-St. Paul Artesian Basin, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23285.pdf
Map of Minneapolis showing the rock surface topography (elevation of the bedrock surface), scale 1 inch = about 2,250 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23286.pdf
Map of Saint Paul showing the rock surface topography, (elevation of the bedrock surface), scale 1 inch = about 2,500 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23287.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Minneapolis-St. Paul Metropolitan District, scale 1:96,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23281.pdf
The 1936 annual meeting of the Minnesota Academy of Science took place at Carleton College on April 18, 1936. This program shows 17 scientific talks, ranging from "The Development of Public Health Medicine in Minnesota" to "Cast Iron Pavement to "The Forestry and Biological Station of the University of Minnesota at Itasca Park." Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
This printed Constitution of the Minnesota Academy of Science is from around 1937. It is very similar to the 1933 Constitution but has removed the associate membership category; the By-Laws set the annual dues as "one dollar for each member." The election process for members is also different, requiring nomination by a member, recommendation by the Council, and a two-thirds vote of the organization, at which point "he shall be duly elected."
The 1938 annual meeting of the Minnesota Academy of Science took place at St. John's University on April 23, 1936. This program shows 28 scientific talks, ranging from seismic geophysical prospecting to "Early Man did Roam in Minnesota." There was a program for the Junior Academy, including a science movie. The docket for the business meeting is also included. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 54 and 55 North, Ranges 7 and 8 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23288.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 56 North, Range 7 West and a portion of Township 56 North, Range 8 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23289.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 57 North, Ranges 6 and 7 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23290.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 58 North, Range 6 West and a portion of Township 58 North, Range 7 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23291.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of a portion of Township 59 North, Range 6 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23292.pdf
Structural (recognizable features produced by deformation of rocks) map of anorthosite occurrence, scale 1 inch = about 2 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23293.pdf
The 1939 annual meeting of the Minnesota Academy of Science took place at Macalester College and the St. Paul Institute on April 22, 1939. This program shows 40+ scientific talks, ranging from lead poisoning in Minnesota waterfowl to carbohydrate metabolism to variable stars. There was a talk about and a tour of the Science Museum at the St. Paul Institute, as well as a program for the Junior Academy. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The 1940 annual meeting of the Minnesota Academy of Science took place at the University of Minnesota in Minneapolis on April 19-20, 1940. This program shows 40+ scientific talks, ranging from "Minnesota Lake Surveys and Fish Management" to the geology of the Duluth region. The program for the Junior Academy included talks by high school students, including reports from Science Clubs. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The 1941 annual meeting of the Minnesota Academy of Science took place at the College of St. Catherine on April 25-26, 1941. This program shows 70+ scientific talks, ranging from "Growth and Distribution of Clams in the Mississippi River above Minneapolis" to "Newly Discovered, Non-metallic Mineral Deposits of Economic Value in Minnesota." The Social Science section included 3 talks on "Price Control in Times of Emergency." Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The 1942 annual meeting of the Minnesota Academy of Science took place at the University of Minnesota in Minneapolis on April 24-25, 1942. This program shows 50+ scientific talks, ranging from "vital war mineral supplies" to control of apple scab to Minnesota archeology. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The 1943 annual meeting of the Minnesota Academy of Science took place at the University of Minnesota in Minneapolis on April 24, 1943. This program shows 30+ scientific talks, ranging from "Nutrition in the Emergency" to "Limnological Notes on Lake Superior" to "Our Post War Domestic Economy. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The October 1943 edition of the Geological Society of Minnesota (GSM) newsletter includes the 1943/1944 weekly lecture series on historical geology by Professor Thiel, field notes that included news from individuals, an editorial column by Alger R. Syme, Editor, and an article titled 'Geology' by Edward P. Burch.
The November 1943 edition of the Geological Society of Minnesota (GSM) newsletter includes a biography of Charles Herbert Preston, miscellaneous short items, and an article on 'Salt of the Earth' reprinted from Compressed Air magazine.
The January 1944 edition of the Geological Society of Minnesota (GSM) newsletter includes a biography of Dr. Leslie O. Dart, miscellaneous short items, and an article on 'Some Values in Historical Geology' derived from an address to the Society presented on October 11, 1943.
The February 1944 edition of the Geological Society of Minnesota (GSM) newsletter includes a biography of George A. Thiel, Ph.D., miscellaneous short items, and an article on Paricutin, Mexico's new volcano by Harvard Geologist Dr. L.C. Graton.
The March 1944 edition of the Geological Society of Minnesota (GSM) newsletter includes a biography of GSM Treasurer Joseph W. Zalusky, miscellaneous short items, the first geological crossword puzzle, and an article on synthetic sapphires produced by The Linde Air Products Corp.
The 1944 annual meeting of the Minnesota Academy of Science took place at the University of Minnesota in Minneapolis on April 22, 1944. This program shows 30+ scientific talks, ranging from "Post-War Education and Counciling of Service Personnel" to hemophilia familial data to solid-state x-ray spectroscopy. The Social Science section included several reports on the impact of the war on Red Wing, Minnesota, as part of a "comprehensive study" initiated by the University of Minnesota graduate school. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The October 1944 edition of the Geological Society of Minnesota (GSM) newsletter includes biographies of Mrs. Helen J. Sommers, Mrs. Charles H. Preston, and Mrs. Anna Kolderie, miscellaneous short items, an article on 'Interpreting Fossil Remains' by Miss Thelma Sneed, and a article on Carlsbad Caverns condensed from Compressed Air Magazine.
The December 1944 edition of the Geological Society of Minnesota (GSM) newsletter includes the editor's thoughts on the first year of the newsletter, paleogeographic maps depicting North America at times such as the Middle Cambrian, a rock classification key, and an Ice Age map.
The January 1945 edition of the Geological Society of Minnesota (GSM) newsletter included Ordovician paleogeographic maps for North America and Europe, and article on trilobites, mineralogy, and history of the Great Lakes.
The February 1945 edition of the Geological Society of Minnesota (GSM) newsletter included a geology lesson, Silurian paleogeographic maps, miscellaneous notices, maps on the history of the Great Lakes, and a working classification for 50 common minerals.
The March 1945 edition of the Geological Society of Minnesota (GSM) newsletter included a geology lesson, Devonian paleogeographic maps, miscellaneous notices, and maps on the history of the Great Lakes.
The April 1945 edition of the Geological Society of Minnesota (GSM) newsletter included society notices, paleogeographic maps for the Mississippian, the bulletin board, a note on silicon, maps on the history of the Great Lakes, and miscellaneous items.
The 1945 annual meeting of the Minnesota Academy of Science took place at Hamline University on April 21, 1945. Minnesota's industrial future to "The Effect of Smoking Cigarets on Normal Persons" to Pleistocene mammalian inhabitants of Minnesota. The Junior Academy program included a talk by a high school student entitled, "Shall I Smoke?" Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The June 1945 edition of the Geological Society of Minnesota (GSM) newsletter was dedicated to the memory of Edward Parris Burch, Founder of the Society; included were multiple eulogies, along with paleogeographic maps for the Pennsylvanian, a note on Niagara Falls, maps on history of the Great Lakes, and notices for two field trips per month over the summer.
The August 1945 edition of the Geological Society of Minnesota (GSM) newsletter included paleogeographic maps for the Permian, continued maps on history of the Great Lakes, a note on an esker in Minneapolis, and a humor page.
The October 1945 edition of the Geological Society of Minnesota (GSM) newsletter included society notes, the lecture program for the winter, paleogeographic maps for the Triassic, and notes on Crater Lake in New Mexico and an ancient Niagara River.
The December 1945 edition of the Geological Society of Minnesota (GSM) newsletter included a report on the convention of the Midwest Federation of Geological Societies in Illinois, paleogeographic maps for the Jurassic, note on staurolites and on map projections, and continuation of the series on Great Lakes history.
Summary of the geology and mineralogy of the rocks and ores that form the Mesabi Iron Range. Includes descriptions of minerals, types of iron formation, chemical composition, geologic structure, maps and diagrams.
The January 1946 edition of the Geological Society of Minnesota (GSM) newsletter included society notices, paleogeographic maps for the Cretaceous, a note on mineralogy, and continuation of the series on Great Lakes history.
The March 1946 edition of the Geological Society of Minnesota (GSM) newsletter included paleogeographic maps for the Tertiary, a geology lesson on the interior of the earth, and continuation of the series on Great Lakes history.
The 1946 annual meeting of the Minnesota Academy of Science took place at the University of Minnesota in Minneapolis on April 27, 1946. This program shows 50+ scientific talks, ranging from atomic energy research to "The War-time Development and Post-war Application of DDT and Insect Repellents" to "Prairie and Rock Vegetation in Rock County, Minnesota." Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The May 1946 edition of the Geological Society of Minnesota (GSM) newsletter included society news, notices for many field trips, paleogeographic maps for the Proterozoic and the Pleistocene, as well as notes on origin of petroleum, on trilobites, and on the geologic column.
The July 1946 edition of the Geological Society of Minnesota (GSM) newsletter included society news, paleogeographic maps for the Paleozoic, as well as notes on coal deposits in the US, and on salt domes.
The September 1946 edition of the Geological Society of Minnesota (GSM) newsletter focused on the Midwest Federation of Geological Societies convention that October in Minneapolis, including a listing of places of geologic interest in Minnesota.
The November 1946 edition of the Geological Society of Minnesota (GSM) newsletter included a report on the Midwest Federation of Geological Societies convention that had been held that October in Minneapolis, a notice of a 16-lecture series by George Schwartz on mineral deposits, a story by George Thiel on sand, and a report on the Society field trip to Grand Canyon.
The January 1947 edition of the Geological Society of Minnesota (GSM) newsletter included society notices including reference to a Black Hills field trip, a story on nuclear power, and a classification of mineral deposits.
The 1947 annual meeting of the Minnesota Academy of Science took place at State Teachers College in Mankato on April 26, 1947. This program shows 30+ scientific talks, ranging from "The Interrelations of the Scientist and Society" to "Chemical Products from Minnesota Peat" and "Lumbering in Minnesota's Northwest." The Junior Academy program included a tour of the Blue Earth County Historical Museum. Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The July 1947 edition of the Geological Society of Minnesota (GSM) newsletter included a report on the Black Hills field trip attended by 52, a story on non-metallic mineral resources, a story on the oil geology of the African Gold Coast, and a not on America's oldest mines.
The November 1947 edition of the Geological Society of Minnesota (GSM) newsletter included an update on Society affairs, an article on geology of Jay Cooke State Park, notices of weekly lectures, and note on mineral club history and on building a mineral collection, and a Society financial statement indicating an annual budget of about a thousand dollars.
The January 1948 edition of the Geological Society of Minnesota (GSM) newsletter included a plan for a field trip to Denver, society news, stories on geology of Alexander Ramsey State Park and of Duluth, and a photo of the Black Hills field trip group, with names.
The March 1948 edition of the Geological Society of Minnesota (GSM) newsletter included stories on geology of Gooseberry State Park, on earth science in the secondary schools, on the continental shelf, and on Minnesota iron ore.
The 1948 annual meeting of the Minnesota Academy of Science took place at the College of St. Thomas on April 24, 1948. This program shows 30+ scientific talks, ranging from "Scotch Pine Seed Sources for Northeastern Minnesota" to radiation hazards from radioisotopes to conservation education. An interrelated series of talks involved "Science and the Philosopher," "The Social Scientist Looks at Science," and "The Scientist Looks at Education and Research." Full-text of the published papers is available in the digitized Journal of the Minnesota Academy of Science.
The May 1948 edition of the Geological Society of Minnesota (GSM) newsletter included society news, plans for 2 or 3 field trips per month over the summer, a note on mineral collecting, and a story on the Panama Canal.
The July 1948 edition of the Geological Society of Minnesota (GSM) newsletter included reports on the American Federation of Mineralogical Societies convention, and the field trip, in Denver, and a story on being married to an engineer.
The September 1948 edition of the Geological Society of Minnesota (GSM) newsletter included society news, and stories on caves, as well as plans for the Midwest Federation of Geological Societies convention coming up in Chicago, a story on geology of Baptism River State Park, and a report on the Colorado field trip.
The November 1948 edition of the Geological Society of Minnesota (GSM) newsletter was dedicated to the memory of Society Past President and newsletter Editor Alger R. Syme, and included a story on geology of Lake Superior.
Maps showing sequence of geologic units (beds) alongshore from Mesaba Avenue to Beyond Lakewood, scale 1 inch = about 1,800 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23294.pdf
Maps showing sequence of geologic units (beds) alongshore from Duluth East City Limits to Near Knife River, scale 1 inch = about 1800 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23295.pdf
Maps showing sequence of geologic units (beds) alongshore from Knife River to Two Harbors, scale 1 inch = about 1,800 feet. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23296.pdf
Map of glacial (Quaternary age glacial and stream sediments) deposits of the Duluth Metropolitan Area, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23297.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 48 North, Range 15 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23298.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 48 North, Range 16 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23299.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 48 North, Range 17 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23300.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 14 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23308.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 15 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23309.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 11 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23310.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 12 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23311.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 13 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23312.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 49 and 50 North, Range 14 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23304.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 50 North, Range 15 West, scale 1 inch = about 1/2 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23305.pdf