Some datasets from the book "Statistics: An Introduction Using R" 2nd Edition by Michael J. Crawle http://www.bio.ic.ac.uk/research/crawley/statistics/
and from "Statistics: Unlocking the Power of Data" by Lock, Lock, Lock, Lock, and Lock (Lock5) http://www.lock5stat.com/datapage.html
to be used in a Statistical Methods and Intro to Data Science course.