Several years of research and cooperation between tribes, state and federal agencies, universities, and affected landowners contributed to the establishment of the Sand Creek Massacre site as a National Park Service unit in 2007. Research continues to be conducted at the site and covers a wide range of subjects including archaeology, birds, and plants.

Information about the history of the Sand Creek Massacre is available from many research institutions and on-line resources. A partial list includes:

• Penrose Library (University of Denver)
• Tutt Library (Colorado College)
• Hal Sayre Papers (Colorado University)
• Colorado historic newspaper collection

Sand Creek Massacre National Historic Site Management Documents.

• Site Location Study
• Historical Research Interim Report 1
• Interim History Report 2
• Interim History Report 3
• Archeological Reconnaissance
• Artifact Categories
• Ordinance Artifacts
• Geophysical Investigations
• Geoarcheological Assessment
• Special Resource Study
• Environmental History Report
• The Search for the Sand Creek Massacre
• Special Study - Aerial Photography