• Miscellaneous photographs 

        Contributor:Unknown
        Date:1900-1901
        Images of John Henry Nelson, a note, a house, the Colorado Plains Substation in 1900, a ship, a masonry dam in Holyoke, Massachusetts, and euchlaena luxurians teosinte in 1901
      • Canal lining manual 

        Contributor:Unknown
        Date:1946
        All images are reproduced in the Colorado Agricultural Experiment Station publication, Canal Lining Manual, by Carl Rohwer, 1946
      • Parshall 

        Contributor:Unknown
        Date:1946
        Images of Ralph Parshall measuring water in Parshall flume with Soil Conservation Service vehicle in background, and people (Dr. Max Parshall (?) and wife, unknown, and Dr. Daryl Simons) in front of an exhibit about Parshall
      • Speech and note from G. H. Palmes on Parshall 

        Contributor:Unknown
        Date:1949
        Note from G. H. Palmes to Ralph Parshall and speech by Palmes about Parshall's life and career