- Outside In, 21 minute Geometry Center video, 2 minute version, 4 second version. Script for the video.
- A brief history of sphere eversions.
- Everting the sphere, 4 page appendix to a book about Stephen Smale, the mathematician who first proved (in 1957) that everting a sphere is possible. The book, Stephen Smale: The Mathematician Who Broke the Dimension Barrier is reviewed by the AMS here and by the MAA here.