■ In 1918, the musical “The Passing Show of 1918” opened on Broadway, the cast included Fred Astaire and his sister, Adele, and the song “I’m Forever Blowing Bubbles.” ■ In 1952, Puerto Rico became a self-governing commonwealth of the United States. ■ In 1985, a spokeswoman for Rock Hudson confirmed he was hospitalized in Paris, was suffering from AIDS.