Leaving its original home in the 1909 Carnegie Library in Civic Center's northwest corner, the new Denver Central Library relocated in 1955 to Civic Center's southeast corner. The building - now known as the "north wing" of the existing Central Library - was designed by famed (and Denver-born) architect Burnham Hoyt (1887-1960) in collaboration with the Denver firm of Arthur and Alan Fisher. Hoyt, who at one time served as the Dean of the New York School of Architecture, also designed the amphitheater at Red Rocks State Park and the State Capitol Annex Building.
SOURCE: www.denverlibrary.org