Ahlquist, Gerald

English

University of Minnesota, Morris (UMM): Digital Well

Journal of the Minnesota Academy of Science Volume 27 Number 1 Article 4 1959 Air Photographs for Your Teaching Gerald Ahlquist St. Cloud State College Follow this and additional works at: https://digitalcommons.morris.umn.edu/jmas  Part of the Agriculture Commons Recommended Citation Ahlquist, G. (1959). Air Photographs for Your Teaching. Journal of the Minnesota Academy of Science, Vol. 27 No.1, 14-16. Retrieved from https://digitalcommons.morris.umn.edu/jmas/vol27/iss1/4 This Article is brought to you for free and open access by the Journals at University of Minnesota Morris Digital Well. It has been accepted for inclusion in Journal of the Minnesota Academy of Science by an authorized editor of University of Minnesota Morris Digital Well. For more information, please contact skulann@morris.umn.edu. THE MINNESOTA ACADEMY OF SCIENCE GEOGRAPHY AIR PHOTOGRAPHS FOR YOUR TEACHING GERALD AHLQUIST Staie College, St. Cloud Most aerial photographs of Minnesota can be obtained from federal agencies. The U.S. Department of Agriculture has the greatest num-ber of aerial negatives available to the public. The Soil Conservation Service began to photograph Minnesota aeri-ally in 1934. The Service was interested in discovering what time of year and what scale of photography would identify soils best on aerial photographs. The experimentation continues but the Commodity Sta-bilization Service possesses the most prints. The Commodity Stabilization Service uses aerial photographs to check on farm activities and incomes. Ever since the service began to have air photographs taken-in 1937-the counties of greatest eco-nomic interest have been the most photographed. The Forestry Service is the third service of the Department of Agri-culture that is interested in aerial photography. It began to photo-graph Minnesota forests in 1936. In 1953 the Army Corps of Engineers had the State of Minnesota photographed from high altitude. Since then it has turned the nega-tives over to the Department of the Interior and the U.S. Geological Survey has used these high altitude photographs to develop the 1 :-250,000 series of topographic maps. In 1947 the U.S. Geological Survey began photographing areas in Minnesota so as to make modern topographic maps. The 'GS-" air photographs available indicate areas that are covered or will be cov-ered by topographic maps. The table below indicates when each Minnesota County has been photographed aerially-in part ( *), or from high altitude ( t) : Aitkin Anoka Becker Beltrami Benton Big Stone YEARS PHOTOGRAPHED FROM THE AIR 1939 1953* 1956 1938 1949t 1953* 1953 1957 1939 1938 1938 1949t 1940 1947t 1949t 1947t 1941t 1952* 1953 1957t 1958 1953* 1953* 1953 1957 1950 1952* 1955 * (partial county coverage due to a special interest such as forestry). t (High Altitude Photography) 14 PROCEEDINGS, VOLUME TWENTY-SEVEN, 1959 Blue Earth 1938 1949* 1949t 1950 1958 Brown 1938 1950 1953* 1955 Carlton 1939 1948 1953* 1957t Carver 1937 1950 1951 1953* 1953t 1957 Cass 1939 1947t 1949t 1953* Chippewa 1938 1950 1953* 1955 Chisago 1938 1948t 1953* 1953 1957 Clay 1939 1948 1952* 1954 1958 Clearwater 1939 1951t 1953* Cook 1939 1949 1950t 1953* 1957t Cottonwood 1938 1949* 1950 1958 Crow Wing 1939 1953* 1956 Dakota 1937 1940 1947t 1951 1953* 1957 Dodge 1937 1948* 1951 1956 Douglas 1938 1951 1953* ·1958 Faribault 1938 1949* 1949 1954t 1954 1959 Fillmore 1934t 1937 1940 1947 1949* 1953 1954t 1959 Freeborn 1937 1949* 1949 1951t 1953 1954t 1959 Goodhue 1937 1949t 1951 1953* 1958 Grant 1938 1951 1953* 1958 Hennepin 1937 1940 1949t 1953t 1953* 1953 1957 Houston 1934t 1937 1947 1950* 1954t 1954 1956t Hubbard 1939 1949t 1953* Isanti 1938 1953* 1953 1955t 1955 Itasca 1939 1947 1951t 1953* Jackson 1938 1949* 1949 1954 1959 Kanabec 1939 1953* 1953t Kandiyohi 1938 1950 1953* 1955 1956t Kittson 1939 1948 1952* 1954 1958 Koochiching 1940 1951 1953* Lac qui parle 1938 1950 1952* 1955 Lake 1937 1949 1953* 1056t Lake of the Woods 1939 1949t 1953* Le Sueur 1937 1940 1950 1953* 1958 Lincoln 1938 1950·, 1952* 1955 Lyon 1938 1950 1953* 1955 McLeod 1937 1940 1950 1953* 1953t 1955 Mahnomen 1939 1953* 1953 1958 Marshall 1939 1948 1952* 1954 1958 Martin 1938 1949* 1949 1954 1959 Meeker 1938 1950 1953* 1953t 1955 Mille Lacs 1939 1953* 1957 Morrison 1939 1953* 1955 Mower 1937 1949* 1949 1954 1959 Murray 1938 1949* 1950 1955 1959 Nicollet 1938 1949t 1950 1953* 1955 Nobles 1938 1949* 1949 1954 1959 Norman 1939 1948 1952* 1954 1958 t (High Altitude Photography) * (partial county coverage due to a special interest such as forestry). 15 THE MINNESOTA ACADEMY OF SCIENCE Olmsted 1937 1940 Otter Tail 1936t 1939 Pennington 1939 Pine 1939 Pipestone 1938 Polk 1939 Pope 1938 Ramsey Red Lake Redwood Renville Rice Rock Roseau St. Louis Scott Sherburne Sibley Stearns Steele Stevens Swift Todd Traverse Wabasha Wadena Waseca Washington Watonwan Wilkin Winona Wright Yellow 1937 1939 1938 1938 1935t 1937 1936 1939 1937 1938 1938 1938 1937 1937 1938 1939 1938 1937 1939 1937 1938 1938 1939 1936 1937 Medicine 1938 1945t 1948 1940, 1947 1949 1940 1940 1949 1949t 1941 1940 1947t 1947t 1949t 1949t 1948 1947t 1949-,, 1949* 1949t 1947 1940 1947t t !High Altitude Photography) 1951 1953* 1954t 1958 1953* 1953 1957 1952* 1953 1958 1950t 1952t 1953* 1957t 1950 1952* 1955 1959 1953* 1954 1958 1951 1953* 1958 1953* 1953 1957 1953* 1953 1958 1950 1953* 1955 1950 1953* 1955 1951 1953* 1958 1952* 1954 1959 1953* 1953 1958 1950t 1951 1953* 1950 1951 1951 1951 1950 1953* 1953t 1953* 1957 1953 1957 1953* 1953t 1953* 1958 1953* 1958 1952* 1958 1953* 1955 1953* 1953 1957 1951 1952* 1956 1951 1953* 1951 1953* 1950 1951 1953* 1953* 1953* 1959 1953* 1956 1953 1957 1957t 1958 1952* 1958 1953t 1954 1953 1957 1951 1953* 1958 1956t 1957t 1957 1956t 1959 ,:, (partial county coverage due to a special interest such as forestry), To facilitate interpretation of the table, Stearns County may serve as an example, This has been photographed by the Department of Agriculture in 1938, 1951 and in 1958. It was photographed partially in 1947 by the U.S. Geological Survey which subsequently produced the Saint Cloud and Annandale Quadrangles in 1950 and 1951 re-spectively. Stearns County was photographed from high altitude in 1953, and these photographs were used to make the 1 :250,000 Saint Cloud area topographic map in 1958. Private companies and individual counties have taken air photo-graphs also. However it is best to check locally to find out when and by whom such pictures were taken. LITERATURE CITED AHLQUIST, G. R, 1959, Air Photographs in Your Teaching. Minn. lour. Sci. 2:28-33. 16 

Air Photographs for Your Teaching

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Air Photographs for Your Teaching

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