Recent Submissions

  • [Structures] - Check dam 

    Contributor:Unknown
    Date:undated
    Image of check dam
  • [Storage] - Trenton Dam 

    Contributor:Unknown
    Date:undated
    Image of Trenton Dam
  • Transportation - U.G. pipe small 

    Contributor:Unknown
    Date:1954-1959
    Images of irrigation pipe. Labeled images: image five "Alfalfa valve, 10" riser," image six "Texas - 1954," image thirteen "Texas 1955," image seventeen "Colorado, Ft Collins, agronomy farm, putting cement collar on large ...
  • Transportation - U.G. pipe large 

    Contributor:Unknown
    Date:undated
    Images of underground pipe and machinery ; tenth image is marked, "Flood Dec. 29th 55', 30" No. joint pipe"
  • [Transportation] - Pipe underground, very large 

    Contributor:Unknown
    Date:undated
    Images of large concrete pipe
  • Transportation - [Pipe underground] 

    Contributor:Unknown
    Date:1958
    Images of structures over underground pipe
  • [Transportation] - Pipe large 

    Contributor:Unknown
    Date:undated
    Images of large pipes and ditches
  • Transportation - Fort Collins ditch 

    Contributor:Unknown
    Date:1959-1960
    Images of men lining Fort Collins ditch. Images 12-17 are marked "Ft Collins lining job"
  • Transportation 

    Contributor:Unknown
    Date:1956
    Images of plants, first image labeled "Colo - Ft Lupton, transportation"
  • Structures - Small 

    Contributor:Unknown
    Date:1958
    Images of small dams and waterways ; first slide is labeled "California"
  • Research 

    Contributor:Unknown
    Date:undated
    Images are Soil Conservation Service negatives KWN-1 to KWN-20
  • Structures 

    Contributor:Unknown
    Date:undated
    Images of dams and waterways
  • Recharge - Texas 

    Contributor:Unknown
    Date:1957
    Images of groundwater recharge and irrigation pumps and pipes
  • R.E.A. 

    Contributor:Unknown
    Date:undated
    Images of R.E.A. cartoon presentation
  • [Pumping] - Pumps prop 

    Contributor:Unknown
    Date:undated
    Images of pumps
  • Pumping - Pumps 

    Contributor:Unknown
    Date:1952-1964
    Images of irrigation pumps used for farming ; sixth image marked "Arizona, pumps 3-2," seventh imaged marked "1956 - Missouri, Large Pump, Lower Delta area," fourteenth marked "1954, Pumping, Diesel engine operating deep ...
  • [Erosion] 

    Contributor:Unknown
    Date:undated
    Aerial image of eroded land
  • [Application] - Ames Co Sprinkler 

    Contributor:Unknown
    Date:undated
    Images of the Ames Co sprinkler system, includes pipes, canals, and sprinklers
  • Application - Corrugations 

    Contributor:Unknown
    Date:undated
    Images of corrugated fields and machinery used to corrugate
  • [Crops] - Rice, Arkansas, swamp 

    Contributor:Unknown
    Date:1956
    Aerial images of rice fields and swamps ; second slide reads "Rice fields Arkansas"

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