Ricky reveals in this episode that he emigrated to the United States by plane. He told Lucy that he came to Miami Beach with a band that he was performing with.
Dorrance and Company was a real publishing house at the time that was based in Philadelphia.
The basement set used in this episode is the same set from the first-season episode THE FREEZER. In fact, the freezer is still in the upstage left corner. That kind of continuity was usual in television sitcoms at the time.