As Iowa's praire sod was broken, sometimes the first crop on the land was flax. Since those early days Iowa has grown some flax every year. Through the war years, oil was needed and the flax average increased. We still need more flax in order to get its products-linseed oil and linseed meal.
Burnett, L. C. and Reddy, C. S.
"Farming With Flax,"
Iowa Farm Science: Vol. 2
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol2/iss9/2