Gadgets: small incendiary device
Disguises: President Grant, Monsieur Claude Renard
The stunt double that Jim jumps at the final gun emplacement looks nothing like Dane.
When Jim punches Dimas and knocks him over the stairs, Dimas' feet go high over the banister. However, in the next shot, they are instantly threaded between the banister poles.
Gadgets: Thermite tape, thermite stick, flammable powder
Disguises: anthropologist Dr. Marvin Gentry
Gadgets: Magician's flowers that emit knockout gas, extendible boot-toe knife
Disguises: magician Dr. Zorbis
The case holding the vaccine is marked U.S. Department of Health. No such government department has ever existed, and the U.S. Department of Health, Education, and Welfare didn't come into existence until 1933.
Crotty tells Artie to use an Ouija board to find Jim, but the Ouija board wasn't commercially introduced until 1890.
Artie uses a trick magician's cane to knock out the masseur at the bath house. such an act is impossible as the "appearing cane" is a lightweight flat metal spring that weighs barely a pound. You might be able to sting someone with it or put out an eye, but you can't knock somebody out with one.
Rusty calls the bartender "Pinocchio," but The Adventures of Pinocchio wasn't commonly read in the U.S. until 1911.
Crotty uses the word "genocide" when he welcomes the agents to his "genocide club." The word wasn't coined until the 1940s.
The stuntman who attacks Jim in place of Ed Asner in the theater at the end has noticeably thicker hair than the actor he's replacing.
Gadgets: thermite strips, mini-explosive
Disguises: accountant Belden Scoville Jr., surveyor Major Samuel P. Brainard
Disguises: Emmett Stark
Gadgets: fake skull with a Roman candle, sleeve gun, divining rod with extendible electrodes
Disguises: Macbeth (Mardi Gras costume), Mosely, English diviner
Trivia: This episode takes place approximately a year after "The Night of the Big Blast", which was also set during Mardi Gras.