Incoming Resources
- The bridges of Madison County, Warner Bros. Pictures presents an Amblin/Malpaso production ; screenplay by Richard LaGravenese ; produced by Clint Eastwood and Kathleen Kennedy ; directed by Clint Eastwood
- Bridges, engineering masterpieces, Dan Zettwoch
- Covered bridges in Illinois, Iowa, and Wisconsin,, by Leslie C. Swanson
- How did they build that? Bridge, by Vicky Franchino
- A Book of Bridges, here to there and me to you, written by Cheryl Keely ; illustrated by Celia Krampien