• Correspondence 

        Author(s):Groundwater Appropriators of the South Platte River Basin, Inc. (GASP)
        Date:1972
        Correspondence concerning contracts and wells from GASP's first year of operation
      • Julesburg 

        Author(s):Groundwater Appropriators of the South Platte River Basin, Inc. (GASP)
        Date:1979-1981
        Agreements concerning well use between GASP, and the Julesburg Irrigation District, Great Western Sugar, Peterson Ditch, and Liddle Ditch