When I lived in the Midwest in the 1920's this book was really useful for finding the small, family run campgrounds that abound between the cornfields. You'd be surprised at how many there are.
https://www.woodalls.com/
Website
Woodalls.com provides online access to all of the campground listings that appear in the printed pages of the Good Sam RV Travel Guide and Campground Directory. The website complements the print directory by providing enhanced search functionality to make finding RV parks and campgrounds easier. Users can search by location or campground name, and updates are made frequently.
Users can also select from five useful tabs: Home, which includes the Campground Quick Search box and features an overview of Campground Resorts, Campground Videos and Online Conversations; Destinations, which gives readers a look at some of the top North American destinations; Forums, an opportunity to get involved with the most comprehensive online community the Open Road Forum, where RVers discuss all aspects of the RVing lifestyle; Blog, where RVers and family campers can explore interesting and informative posts and articles on everything from family camping and traveling tips to traveling with pets and tech tips & checklists to make sure you’ve got everything you need for the road; and Buy, where users can order the printed Good Sam RV Travel Guide and Campground Directory online through Camping World.
The Woodall's|AAA Regional Campground Guides
The Woodall’s|AAA Regional Guides are made up of seven different regional guides, that together comprises over 14,500 listings for campgrounds and RV parks across North America. Each guide contains all the information you need to know to get the most out of your RVing adventures.
The Good Sam RV Travel Guide and Campground Directory
The Good Sam RV Travel Guide and Campground Directory contains all 14,500 North America listings. The Good Sam triple rating that accompanies each campground listing in the directory gives readers an at-a-glance assessment of the campground's amenities, cleanliness and environment.
This is just one more reason the Good Sam RV Travel Guide and Campground Directory and Woodall’s|AAA Regional Campground Guides are the most trusted resource