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Two men looks at ears of corn while other people look at seed samples during the 1958 Little International Exposition at South Dakota State College.

Man looking at ears of corn in the agronomy exhibit at the 1969 Little International exposition at South Dakota. The are other seed samples on tables behind him.

Research notebook for N.E. Hansen's experiments with grasses, clovers, and forage that were conducted near the Hunter Salzer Farm by Mellet, South Dakota in 1897 with remarks about 1896. The first part of the notebook discusses his experiments on 38 plots, which included numerous varieties of grasses, oats, wheat, alfalfa, clovers, and corn. The notebook also details his research on an additional 64 plots of grasses and forage plants. The notes include his assessments of the varieties and comments regarding the weather.