I am currently reading Ross Duffin's excellent book How Equal Temperament Ruined Harmony. I wanted to find some examples of some of what he discusses in the book and found these two excellent videos by Alice M. Chuaqui Baldwin:
Thanks very much for these references. I have often wondered what "temperaments" were, but never took the time to research. I now understand much more about their whys and wherefores. A whole new and fascinating world!