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.
Explore History Colorado's resources for the classroom.
Archaeology, History & Preservation
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.
Communities across Colorado host events throughout the year to celebrate historic places, educate Coloradans on the importance of archaeology and preservation, and connect with the places that have shaped our state. This culminates with Archaeology & Historic Preservation Month in May.
The Program for Avocational Archaeological Certification (PAAC) is a mutually beneficial educational program for avocational and professional archaeologists. Established in 1978 by the Colorado Archaeological Society (CAS) and the Office of the State Archaeologist of Colorado (OSAC), it allows CAS members and other citizens to obtain formally recognized levels of expertise outside of an academic degree program.