Water Resources Archive
Over 30 water resource collections from individuals and organizations that have been instrumental in the development of water resources in Colorado and the West
Colorado Agricultural Archive
Over 30 agricultural collections of individuals and organizations that enhance understanding of Colorado's agrarian heritage
University Archive
Non-current paper records that are essential to operating the University and preserving its history
Manuscripts
Over 20 collections of books, diaries, papers and other manuscripts from historically significant individuals
University Historic Photograph Collection 
500,000 photographs related to the history of the university
Posters
Over 3000 posters in several collections, with a focus on modern international art posters
Archives
Archives contain multiple related collections. They are largely in paper format, but selected content is being digitized.