The Cub Scouts have to perform a number of activities to win tickets to the World's Fair.
Mr. Mooney's opponent in the comptrollers race is named Ed Holly.
Mooney speaks Italian quite well. He says he "picked up a few words in the Army."
Goof: As Umberto races into the cleaners to rescue Lucy, he pushes the vat of green dye and it moves quite easily. If it was actually full of liquid dye, the weight would prevent it from moving at all.
The Mooneys live at 429 Elm Street.
Roberta and her son are playing in Danfield at the Elm Tree Inn. She auditions for a gig at the Copacabana in New York City.
Roberta Sherwood sings "Bill Bailey" and "Up a Lazy River."
Goof: Mary Jane Croft is incorrectly credited as Mary Jean Croft in the closing credits.
Lucy and Viv put $1000 of Viv's money down on the restaurant.
Lucy inexplicably plays the violin in this episode.
Mr. Mooney's daughter Rosemary, who lives in Trenton, New Jersey, is about to give birth to his first grandchild.
The finale, "There's No Business Like Show Business," features:
Lucy and Mooney in a silent film take-off, Vivian as Shirley Temple singing "On the Good Ship Lollipop," Mooney and Vivian singing "Tiptoe Through the Tulips," Lucy playing "Glow Worm" on the saxophone, and Ethel Merman performing "Everything's Coming Up Roses."
Lucy credits the great Danfield vocal coach Dr. Gitterman with teaching her how to sing. Played by Hans Conried, he applied his skills to Lucy in the Season 1 episode Lucy's Barbershop Quartet.
Lucy offers Agnes Schmidlapp $5 to come to her house and pretend to be Ethel Merman.
Micheal J. Pollard was cast as Mooney's son because Eddie Applegate (who previously had played him) was now busy on The Patty Duke Show; Pollard was only used this one time.
John spent only a dollar on his print of Mona Lisa.
Lucy spills her purse at the art store. The contents include a partially eaten sandwich from lunch, an apple, and a broken mousetrap.
Lucy says Mr. Mooney used to live on a farm in Indiana.
Lucy switches with Audrey Simmons and Viv with Alice Banfield so they can work now as "Hospital Helpers" and corner Mr. Mooney in the hospital.
Vivian talks in her sleep.