Most would have thrown it out years ago but I've kept this old notebook that belonged to great Uncle Arthur Nevard. It gives a good view of the financial situation of the farm in the early 1900s. Records of the grain sold, groceries and farm supplies bought.
This page showing loads of wheat hauled to town in 1919 indicates a price of near $2 a bushel. I have not done the adjustment for inflation but I'm thinking $2 bought a lot of groceries and supplies in 1919.
