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|Manufacturer||Eyerly Aircraft Company|
Monster is a Polyp ride located at Valleyfair in Shakopee, Minnesota, United States. It opened in 1977. Monster uses spare parts from the former Octopus ride at Worlds of Fun in Kansas City, Missouri, United States.
- "Valleyfair advert". Star Tribune. https://www.newspapers.com/clip/53827369/monster-valleyfair-new-for-1977/.
- "Oriental Octopus". http://www.worldsoffun.org/1973/orientaloctopus.html. Retrieved November 7, 2021.