The owner of the hotel in Florence where the Ricardo/Mertz party stays is named Sig. Nicoletti. The choice of this name probably came from Louis Nicoletti, a frequent face in episodes of this series, and an Assistant Director on Lucy's later sitcoms, as well as Lucy's film with Henry Fonda, Yours, Mine and Ours (1968).
Final appearance of Joseph A. Mayer and Michael Mayer as Little Ricky. In season 6 he will be portrayed by Richard Keith.
Over the closing credits, the announcer tells the audience to read about Lucille Ball and Desi Arnaz in the April 17, 1956 issue of "Look".