See this very informative website by clicking here.
Both of my parents were born in the early part of the decade of the 1920s in rural and small-town Kansas, right next to the Nebraska border. The info from the link lines up with the stories told to me by my mother as I grew up much later in small-town Missouri, circa the 1960s.
Wheat harvest with machinery of 1920.
— MRW
homelessphilosopher 