The evening this episode first aired (November 23, 1970) Desi Arnaz Sr. guest-starred on "Rowan and Martin's Laugh-In," the second half hour of which aired opposite "Here's Lucy."
Writer and Script Supervisor Milt Josefsberg was a writer on Jack Benny's television program for a decade. Josefsberg wrote all three of the "Here's Lucy" scripts that featured Benny.
This episode was shot without the presence of a studio audience. In her DVD introduction to the episode, Lucie Arnaz says that this episode didn't finish shooting until the early hours of the morning.
At the start of the episode, Harry is on the telephone with Jack Benny's manager Irving Fein. In real life, Fein was Benny's manager and publicity director from 1947 to 1975. Fein also managed George Burns later in his career.
The scene where Lucy is pretending to be Jack's wife Mary Livingston while reading a letter it was actually Mary Livingstons voice.