The Hart Research Library is the primary access point to History Colorado’s collection of archives, artifacts, and photography. Our vast collection brings the rich documentary legacy of Colorado’s past to researchers here and around the world. The Library is open to the public and free of charge.
Drill down to research and learn more about specific topics in Colorado history and prehistory. Learn more about our avocational archaeology classes (PAAC), preservation, collections and your own history through classes and resources available from History Colorado.