This presentation was recorded at the Wisconsin Historical Society “History Sandwiched In” series in July 2013. Since that recording, my continuing research has changed some of the facts stated in the video. Those changes are noted underneath the video.

Updates from this 2013 video:

1. My book was published in 2015 “A Wilderness of Rocks: the Impact of Relief Models on Data Science” available on Amazon or through inter-library loan.
2. UW-Madison has more models than 25. In 2014 I discovered models at UW-Whitewater and UW-Milwaukee making 28. These are all listed in the book.
3. In April 2018, I discovered a Grand Canyon model at Wesleyan University. They are approximately the same age, but the UW-Madison map has been altered with new map data whereas the Wesleyan map has not.
4. The Yosemite map: I mentioned the dotted line is the park boundary. I was wrong. It is the extent of a geologic survey by Francois Matthes in USGS PP 160)
5. I am currently writing a biography of Edwin E. Howell and am looking for a publisher.