N.E Hansen's research notebook regarding field experiments for grasses and grains in 1888 and 1889. The field consisted of 66 plots. He studied 92 varieties in total including: 22 grasses, 9 clovers, 20 wheats, 23 oats, 14 barleys, 1 rye. Hansen was assisted by John M. Aldrich, Alvah George Cross, and J.G. Ross.