Wikipedia: Columbia Carousel
Brief history about the two Columbia Carousels at Great America theme park in Santa Clara, CA and Gurnee, IL, which both hold the record as the world's tallest carousel.
Great America Parks: Carousel Columbia
Tribute page to the double-decker Carousel Columbia, located at both Great America theme parks in Santa Clara, CA and Gurnee, IL. Includes a gallery of pictures of the carousels.
Un-Official Columbia Carousel Site
Fansite dedicated to the two-story carousel, Columbia, with photos, history, and trivia about Great Americas' carousels.