Colorado Ballet, located in Denver, Colorado is a regional dance company that was conceived as a ballet school founded in 1951, by Denver natives Freidann Parker and Lillian Covillo. To showcase their students, they established Colorado Concert Ballet in 1961.

Lillian Covillo was an alumna of the University of Denver who co-founded the Colorado Ballet along with Freidann Parker. This collection includes photos, programs, newspaper clippings, scrapbooks and ephemera related to Covillo and Parker's dance work and teaching.

This collections contains the records of the Williamson Family and the dance school Maxine inherited from Lillian Cushing. This collection contains photos, music scores, memorabilia, programs, correspondence, writings, and more. Contents relate to the Williamson family as well as Lillian Cushing and Martha Faure Carson.