Maple Research Collection

This collection documents the history of maple research at the University of Vermont. Included in the collection is a selection of photographs from the archives of the Proctor Maple of Vermont (UVM), and the first permanent maple research facility in the United States. The photographs, taken between 1948-1957, document the construction of the field station’s first sugarhouse, as well as the PMRC sugar bush and early maple experiments. Also included in the collection are the published University of Vermont Agricultural Extension bulletins on maple research (1890-1988), taken from both the Proctor Maple Research Center archive and the University of Vermont Libraries Department of Special Collections. Maple research in Vermont has a long history, dating back to the early 1890s, when C. H. (Charles Howard) Jones, head of the UVM Agricultural Experiment Station and a prominent early maple sugar chemist, conducted seminal research on the biology of maple trees to better understand the sap flow mechanism and its dependence on meteorological changes, as well as the considerable variance in sap sugar content. In 1946, James Marvin and Fred Taylor founded the Proctor Maple Research Center with a donation by Governor Mortimer Proctor of the former “Harvey Farm” in Underhill Center, Vermont, to UVM. For the first year of operation, research on sap flow, maple tree physiology, and the economics of maple production were conducted in an 8’ x 12’ shed. In 1948, the first sugarhouse was constructed to allow research on syrup production techniques, followed several years later by the C.H. Jones Laboratory (which served as the primary research laboratory until it burned down in 1998). Through the years, the PMRC has had its fair share of prominent maple researchers, scientists and educators, including Frederick Laing, whose research helped develop and improve methods of installing plastic tubing and directed improvements in using vacuum pumps to increase sap yields, and Mariafranca Morselli, who brought a greater understanding to the role of microorganisms in determining syrup grade, as well as developing methods to detect adulteration of maple syrup by adding other sugars. In 1999, the PMRC was named to the National Register of Historic Places, and today houses facilities that include an 8,000 square foot laboratory and a demonstration and research sugarhouse, as well as the original research shed.

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Miniature of The carbohydrate contents of the maple tree
The carbohydrate contents of the maple tree
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    • Creator: Vermont Agricultural Experiment Station, Jones, Charles Howland, 1870-., Bradlee, Jennie L.
    • Parent Collections: Maple Research Collection
    Miniature of A new maple product
    A new maple product
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      • Creator: Vermont Agricultural Experiment Station, Smith, Richard W. (Richard Watson), 1898-1935.
      • Parent Collections: Maple Research Collection
      Miniature of The exclusion of lead from maple sap : progress report
      The exclusion of lead from maple sap : progress report
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        • Creator: Vermont Agricultural Experiment Station, Jones, Charles Howland, 1870-.
        • Parent Collections: Maple Research Collection
        Miniature of Some factors affecting the yield from maple tapholes
        Some factors affecting the yield from maple tapholes
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          • Creator: Vermont Agricultural Experiment Station, Marvin, James W. (James Wallace), 1909-., Greene, Mary T.
          • Parent Collections: Maple Research Collection
          Miniature of Maple sugar
          Maple sugar
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            • Creator: Vermont Agricultural Experiment Station, Cooke, Wells Woodbridge, 1858-1916., Hills, Joseph Lawrence, 1861-1954.
            • Parent Collections: Maple Research Collection
            Miniature of Buddy sap
            Buddy sap
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              • Creator: Vermont Agricultural Experiment Station, Edson, H. A. (Howard Austin), 1875-.
              • Parent Collections: Maple Research Collection
              Miniature of Economics of the farm manufacture of maple syrup and sugar
              Economics of the farm manufacture of maple syrup and sugar
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                • Creator: Vermont Agricultural Experiment Station, Hitchcock, John Allen, 1894-.
                • Parent Collections: Maple Research Collection
                Miniature of Variation in sugar content of maple sap
                Variation in sugar content of maple sap
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                  • Creator: Vermont Agricultural Experiment Station, Taylor, Fred H. (Fred Herbert).
                  • Parent Collections: Maple Research Collection
                  Miniature of The maple sap flow
                  The maple sap flow
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                    • Creator: Vermont Agricultural Experiment Station, Jones, Charles Howland, 1870-., Edson, A. W. (Arthur Woodbury), 1877-., Morse, W. J. (Warner Jackson), 1872-1931.
                    • Parent Collections: Maple Research Collection
                    Miniature of The maple sap flow : (Popular edition of no. 103)
                    The maple sap flow : (Popular edition of no. 103)
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                      • Creator: Hills, Joseph Lawrence, 1861-1954.
                      • Parent Collections: Maple Research Collection