There were some broken links in the Rotations reading (now fixed – I think).
This prompted me to make a new “protected reader” for this class. The web directory https://graphics.cs.wisc.edu/Courses/Readers/Animation11/ will be a place where all of the readings that are only for this class (because of copyright restrictions) will go. Note: this uses the CSL authentication mechanism, so you need to use your CSL account and password.