Colorado Historical Society
1300 Broadway
Denver, CO 80203
303-866-3682
Website: www.coloradohistory.org/
Colorado State Archives
1313 Sherman, Room 1B20
Denver, CO 80203
303-866-2358
Website: www.colorado.gov/dpa/doit/archives/
Fort Collins Local History Archive
The archive has recently moved to the Museum of Discovery and will re-open on November 10, 2012.
New address: 408 Mason Court
Fort Collins, CO 80524
970-221-6738
Archives Website: Archives Website
Museum Website: Museum Website
National Archives — Rocky Mountain Region
The National Archives has recently moved to Broomfield, CO and will be open on October 9, 2012.
17101 No. Huron Street (take I-25, Brighton/Lafayette exit, drive west for one block to Huron and turn north for several blocks past Children’s Hospital)
Broomfield, Colorado 80023
303-604-4740, Archival Research Room
NARA Website
NARA Denver Facebook Page