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tldr-bot1 point1 hour agostickied comment

A 10-year-old Kevin Glikmann designed and built a four-loop roller coaster model called the Quadrupuler in 1978 after riding Space Mountain at Disneyland, then mailed blueprints and Polaroids to the theme park. WED Enterprises responded with a letter thanking him for his submission and informing him that Disneyland was developing Big Thunder Mountain Railroad for Frontierland.