Morain, Thomas, Nielsen, Lynn, and Schwieder, Dorothy. Iowa Past to Present: The People and the Prairie. Iowa State University Press: 1989
Anderson, J.L. Industrializing the Corn Belt. Northern Illinois University Press: 2009
Hurt, R. Douglas. American Agriculture: A Brief History. Iowa State University Press: 1994
Gardner, Bruce L. American Agriculture in the Twentieth Century: How it Flourished and What it Cost. Harvard University Press: 2006
Fussell, Betty. The Story of Corn. Knopf Printing Edition: 1992
Wallace, Henry A. Corn and its Early Fathers. Iowa State University Press: 1988
Harrington, Roy. Grandpa’s John Deere Tractors. American Society of Agriculture: 1996
Iowa Department of Agriculture & Land Stewardship
Iowa State University Extension
Iowa Future Farmers of America
Iowa Department of Cultural Affairs
State Historical Society of Iowa
University of Iowa Goldfinch publications available for free download
Issues specifically related to farming:
Iowa Pork Producers Association
Iowa Farm Bureau Federation – Agriculture in the Classroom (especially for Polk County, Iowa)
Iowa Sheep Industry Association
Sustainable Agriculture Research and Education
Iowa State University’s Organic Agriculture
Leopold Center for Sustainable Agriculture
Learn about soil through the Underground Adventure virtual exhibit from the Field Museum (Chicago)
Dig It! The Secrets of Soil from the Smithsonian
The Dirt on Soil: What’s Really Going on Under the Ground from Discovery Education