Cameo appearance by Hanna-Barbera cartoon characters Yogi Bear and Boo Boo.
Fred takes the family on vacation to Jellyrock Park where he tangles with a smarter than the average bear named Yogi and his little pal Boo-Boo. Jellyrock Park is an obvious stone-age reference to Jellystone Park.
A song called "Wilma" by Swedish comedian Owe Thornqvist was featured. It was a hit in his homeland, but was done without any permissions from Hanna Barbara. When HB threatened to sue, Thornqvist came up with such inane excuses that HB were more humored by his chutzpah than angry. They created the entire episode around his song. He recorded an English version for the show, but they opted to use his original Swede version anyway.
Wilma reveals that their house has an attic, although it is never shown.
ABC Originally Broadcast This Episode In Black And White