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National Archives — Rocky Mountain Region

Address The National Archives — Rocky Mountain Region
Building 48 — Denver Federal Center
West 6th Avenue and Kipling Street P.O. Box 25307
Denver, CO 80255-0307
Telephone (General Inquiries): (303) 236-0817
(Genealogy Inquiries): (303) 236-0806
Fax: (303) 236-9297
E-mail: denver.archives@nara.gov
Web site: http://www.archives.gov/facilities/co/denver.html
Hours   Microfilm research - Building 46 (including genealogy-related microfilm):

7:30 A.M. to 3:45 P.M., Monday, Wednesday, Friday
7:30 A.M. to 8:45 P.M., Tuesday and Thursday
8:30 A.M. to 4:45 P.M, 1st and 3rd Saturday each month
Closed Sundays and Federal holidays.

Textual records research - Building 48:

7:30 A.M. to 3:45 P.M, Monday through Friday
Closed weekends and Federal holidays.

Holdings

In addition to selected national microfilm records, this branch includes original regional records from Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming, and a portion of New Mexico. This branch of the National Archives holds more than 20,000 cubic feet of historical records dating from the Revolutionary War to the present. The original records consist mainly of local court records. Among their national records on microfilm are U.S. census records for all states from 1790-1920, excluding 1890; census records indexes for 1880, 1900, 1910, and 1920; military service records, pensions, and bounty land warrant applications; IRS assessment lists; an extensive collection of Native American censuses; and various passenger arrival lists.

Access to Records

On Site

Researchers who plan to use the original records on-site should schedule visits in advance. All researchers using original records need to get a researcher ID card. Records may be photocopied unless the condition of the document prohibits it. Researchers who plan to use the microfilm records can do so in the self-service microfilm reader room. No appointment is necessary but there is a time limit for use of the readers when other researchers are waiting. Self-service microfilm to paper copies are available.

Through the Mail

The National Archives staff will not do genealogical research for you. However, they can look up and copy a particular record if you have detailed information about that record. Costs are usually less than $10. If you are looking for a specific type of record, call or write to find out what information is required before the staff will initiate a search.

Literature Available

A number of important pamphlets are available through the Archives. You may consider ordering the following pamphlets to help you in your search:

  • National Archives — Rocky Mountain Region
  • Microfilm Publications in the National Archives — Rocky Mountain Region
  • Guide to Records in the National Archives — Rocky Mountain Region
  • Select List of Publications of the National Archives and Records Administration
  • Ordering Reproductions from the National Archives
  • Military Service Records in the National Archives of the United States
  • Using Records in the National Archives for Genealogical Research
  • Using Census Records
  • The National Archives Microfilm Rental Program
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