• Agricultural regions of Colorado 

        Contributor:Colorado State College of Agriculture and Mechanic Arts
        Date:1937-06-15
        A map of Colorado, with all of the counties named, which shows the "Agricultural Regions of Colorado."
      • Agricultural planning chart 

        Contributor:Colorado State College of Agriculture and Mechanic Arts
        Date:1941-10
        Organizational chart for agricultural planning showing community and county agricultural planning committees.