maps developed by Linda Zellmer, Government Information & Data Services Librarian, Western Illinois University Libraries, with data from the U.S. Census Bureau and the Census of Agriculture
maps developed by Linda Zellmer, Government Information & Data Services Librarian, Western Illinois University Libraries, with data from the Census of Agriculture, 2017 and ESRI, Inc
edited by Robert H. Watrel, Ryan Weichelt, Fiona M. Davidson, John Heppen, Erin H. Fouberg, J. Clark Archer, Richard L. Morrill, Fred M. Shelley, Kenneth C. Martis ; cartography by Robert H. Watrel and J. Clark Archer