Features the only on-screen pairing of Joe Besser and Shemp Howard, who were respectively considered the 4th and 5th members of The Three Stooges.
The comment by Boots (Buddy Baer) to Grappler (Max Baer), "I'll hit you harder than Louis ever did", is a reference to boxer Joe Louis who battled both Baers in the 1930s.
The gorilla was originally meant to be a female simian pursuing Costello. However, the Breen Office censors that enforced the Production Code in Hollywood demanded the gorilla's gender be changed as they felt a female gorilla's pursuit of a man would be on par with bestiality.
The little "mini-car" that Lou Costello drives up to the office building near the end of the film isn't a movie prop car, as some have claimed. It's a Crosley, which was a real car produced by the Crosley Motor Co. from 1939-1942, discontinued during the war years, then resumed in 1946 until the company folded in 1952.
There is a scene where Bud Abbott and Lou Costello are talking in their tent and Joe Besser dashes into the tent, grabs a glass of water and dashes out again. He repeats this several times until Abbott stops him and asks why he's so thirsty. Besser replies that he's not thirsty, it's that his tent is on fire. That was based on an incident in Costello's childhood, when he accidentally set some clothes in his bedroom on fire. His father was in the living room, which was between the kitchen and Costello's bedroom. Costello, not wanting to let his father know that he had set his room on fire, dashed back and forth between the kitchen and his bedroom with glasses of water until his father finally asked what was going on, whereupon Costello was forced to tell what he had done.