In terms of upcoming centenaries, the good news is that we should be favored with plenty of Marilyn Monroe movies. True, her most enduring contribution to equine sport was to exclaim, in Some Like It Hot: "Water polo! Isn't that terribly dangerous?" "I'll say," replies Tony Curtis as the fake millionaire. "I had two ponies drowned under me." In the Thoroughbred world, therefore, we will instead be honoring another immortal female born in 1926. Through the next year, in fact, it might be fun to make a specific note of...