AllMovie

Ma and Pa Kettle at the Fair was Number Four in Universal's immensely successful "B"-picture series. It is giving away nothing to reveal that Marjorie Main and Percy Kilbride once more assume the title roles. The plot is motivated by Ma's desire to send daughter Rosie (Lori Nelson) to college. To that end, she intends to win a big cash prize at the upcoming county fair. Meanwhile, Pa uses his half of the winnings (which no one, as yet, has really won!) to purchase a race horse. When Mafails to win the money, the Kettles are forced to rely on the horse to save the day during a sweepstakes race. Towards the end of Ma and Pa Kettle at the Fair, a close-up of the racing statistics sheet is shown, revealing that one of the owners is "Quinn Martin"--a cute inside joke, inasmuch as Mr. Martin was a prolific scriptwriter and a friend of Ma and Pa Kettle producer Leonard Goldstein.