Equipment Visible: When Shirna does her little dance, the wire leading to the Miniscope is visible.
Factual Error: The calendar that the Doctor spots shows the date is Tuesday, June 4, 1926. The problem is that June 4, 1926 was a Friday.
Other Mistake: When Jo moves across the room to get the newspaper, the sound of a pen or pencil falling on the floor can be heard.
The Doctor [ regarding the floor hatch ]: It slides open.
Jo: How does it work?
The Doctor: Anti-magnetic cohesion, I should think.
Jo: Never heard of it.
The Doctor: Well you wouldn't have done, Jo. You were born about a thousand years too early for that.
Jo: Oh, I do love being with you, Doctor. You make me feel so young.
Jo: We're on Earth.
The Doctor: That's impossible.
Jo: Why can't you ever admit when you're wrong?
The Doctor: Because that's impossible too.
Novelisation: Doctor Who and the Carnival of Monsters by Terrance Dicks (ISBN 0 426 11025 0) first published by Tandem/Wyndham Publications in 1977.
DVD: Doctor Who: Carnival of Monsters (BBCDVD 1098) released in July 2002. Released in U.S.A./Canada (Warner Home Video E1758) in July 2003.
Video: Doctor Who: Carnival of Monsters (BBCV 5556) released in March 1995. Released in U.S.A./Canada (Warner Home Video E1311) in March 1996.