Although this episode originally aired in January 1959, Betty's announcement about the annual ball puts the story in the spring.
Although Jim's age is never stated, given that earlier in the series it was revealed that he graduated from high school in 1928 at the probable age of 18 and was, therefore, probably born in 1910, he more than likely turns 49 on this birthday, making Robert Young three years older than the character he plays.
Parker Fennelly also appears in season 2, The House Painter (1956), that time as a Mr. Everett, who, similar to Uncle Charlie, is also a house painter disgusted with what he perceives happening in the Anderson household.