May 9, 1955 –
Harpo Marx had only recently suffered a heart attack and was warned by doctors not to continue performing. But, luckily for us, Harpo refused, and went on to appear in an episode of I Love Lucy, Lucy and Harpo Marx, which aired on this date.
The Lucy-Harpo “mirror routine” became a rare scene of I Love Lucy that was filmed without a live audience. Because of the complicated set-ups for the shot, the studio audience was sent home. Lucy and Harpo did take after take and the best shots were later spliced together, as one long scene, by the film editor. (After filming was over, Harpo stayed and played his harp for the cast and crew while Vivian Vance sang.)
The Haus of Dcaligari 