The economic history of Iowa farming is written in the ups and downs of Iowa farm income. When national income soared during the war to two and one-half times its prewar mark, good times came to Iowa farms.
Kutish, Francis A.
"Ups and Downs of Iowa Farm Income,"
Iowa Farm Science: Vol. 5
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol5/iss2/4