In "The Giant Ape Caper", the ape climbs a skyscraper, holding Gloria, a la Fay Wray in "King Kong".
"The Giant Ape Caper" was rebroadcast during Season 4 on December 3, 1983. It was the last Richie Rich segment to ever air on ABC before the series went off the air in September 1984.
The title "Shoe Biz" is a play on "Showbiz", the common name of the entertainment industry.
When the riverboat crashed into a rock and sank, Gloria was in the water, showing only her upper body. She also ended up in the water in "Voodoo Island" during Season 2, and she was briefly underwater fully clothed in "One of Our Aircraft Carriers Is Missing" from Season 1.