National Archives
Rocky Mountain Region
Bldg. 48, Denver Federal Center
P.O. Box 25307
Denver, CO 80225-0307
Phone: (303)407-5751
E-mail: denver.archives@nara.gov
Web: archives.gov/rocky-mountain/
Colorado, Montana, New Mexico, North Dakota, South Dakota, Utah, and Wyoming

Colorado State Archives
1313 Sherman St.
Room 1B20
Denver, CO 80203
Phone: (303) 866-2358
Fax: (303) 866-2257
Web: colorado.gov/dpa/doit/archives/

Colorado State Library
201 E. Colfax Ave.
Denver, CO 80203-1799
Phone: (303)866-6900
Fax: (303)866-6940
Web: cde.state.co.us/index_library.htm

Denver Public Library
Western History / Genealogy Department
10 W. 14th Avenue Parkway
Denver, CO 80204-2731
Phone: (720)865-1821
Fax: (720)865-1880
Web: denver.lib.co.us/whg/

University of Denver
Penrose Library Special Collections
2150 E. Evans Ave., Lower Level
Denver, CO 80208-2007
Phone: (303)871-3428
Web: penlib.du.edu/about/collections/SpecialCollections/

Aurora Genealogical Society of Colorado
P.O. Box 31732
Aurora, CO 80041-0732
Phone: (303)326-8619
Web: arapahoelibraries.org/go2.cfm?pid=1023

Boulder Genealogical Society
P.O. Box 3246
Boulder, CO 80307-3246
Web: rootsweb.com/~bgs/

Colorado Chapter/Ohio Genealogical Society
P.O. Box 1106
Longmont, CO 80502-1106

Colorado Council of Genealogical Societies
P.O. Box 40270
Denver CO 80204-0270
Web: rootsweb.com/~coccgs/

Colorado Genealogical Society
P.O. Box 9218
Denver, CO 80209-0218
Web: rootsweb.com/~cocgs/

Colorado Society of Hispanic Genealogy
Hispanic Heritage Center
924 West Colfax Avenue, Suite 202
Denver, CO 80204-2629
Web: http://hispanicgen.org

Columbine Genealogical and Historical Society
P.O. Box 2074
Littleton, CO 80161
Web: rootsweb.com/~cocghs/

Foothills Genealogical Society of Colorado
P.O. Box 150382
Lakewood, CO 80215-0382
Web: rootsweb.com/~cofgs/

International Society for British Genealogy and Family History
P.O. Box 350459
Westminster, CO 80035-0459
Web: www.isbgfh.org/

Larimer County Genealogical Society
P.O. Box 9502
Ft. Collins, CO 80505-9502
Web: jymis.com/~lcgs/

Longmont Genealogical Society
P.O. Box 6081
Longmont, CO 80501
Web: rootsweb.com/~colgs/

Pikes Peak Genealogical Society
P.O. Box 1262
Colorado Springs, CO 80901
Web: rootsweb.com/~coelpaso/ppgspubs.htm

Weld County Genealogical Society
P.O. Box 278
Greeley, CO 80632
Web: rootsweb.com/~cowcgs/

Bessemer Historical Society
1612 E. Abriendo Ave.
Pueblo, CO 81004
Web: www.cfisteel.org/

Colorado Historical Society
Stephen H. Hart Library
1300 Broadway
Denver, CO 80203
Phone: (303)866-3682
Web: coloradohistory.org/chs_library/library.htm

BAPTIST

American Baptist Historical Society
P.O. Box 851
Valley Forge, PA 19482-0851
Web: abc-usa.org/abhs/

METHODIST

Rocky Mountain Conference Historical Society
Ira J. Taylor Library
Iliff School of Theology
2201 S. University Blvd.
Denver, CO 80210
Phone: (303)765-3173
Web: discuss.iliff.edu/taylor/

PRESBYTERIAN

Presbyterian Historical Society
United Presbyterian Church (U.S.A.)
425 Lombard St.
Philadelphia, PA 19147
Phone: (215)627-1852
Web: www.history.pcusa.org/

ROMAN CATHOLIC

Diocese of Denver
Vehr Theological Library
1300 S. Steele St.
Denver, CO 80210
Phone: (303)715-3146
Fax: (303)715-2037
Web: www.archden.org/library/

Diocese of Pueblo
1001 N. Grand Ave.
Pueblo, CO 81003
Phone: (719)544-9861
Web: www.dioceseofpueblo.com/

AFRICAN-AMERICAN

Black Genealogical Research Group
P.O. Box 40674
Denver, CO 80204-0674
Web: www.coax.net/people/lwf/BGSG_DEN.HTM

HISPANIC

Genealogical Society of Hispanic America
P.O. Box 9606
Denver, CO 80209-0606
Web: www.gsha.net/