Colorado

National Archives – Rocky Mountain Region (Denver)

Colorado, Montana, New Mexico, North Dakota, South Dakota, Utah, Wyoming

http://www.archives.gov/rocky-mountain/

Rocky Mountain Online Archives

http://www.archives.gov/rocky-mountain/http://rmoa.unm.edu/

Colorado State Archives Historical Records Index

http://www.colorado.gov/dpa/doit/archives/hrd/index.htm

Colorado State Archives Online Indexes

http://www.colorado.gov/dpa/doit/archives/online.htm

Colorado State Library

http://statearchives.us/colorado.htm

Colorado Historical Society (History Colorado)

http://www.historycolorado.org/

Colorado Railroad Museum

http://www.coloradorailroadmuseum.org/

Colorado School of Mines

http://library.mines.edu/

USGS Library

http://library.usgs.gov/

Colorado Council of Genealogical Societies

http://www.cocouncil.org/

Colorado Genealogical Society

http://www.cogensoc.us/

Denver Public Library:  Western History and Genealogy

http://history.denverlibrary.org/

University of Denver Penrose Library

http://library.du.edu/site/

University of Denver Penrose Library – Special Collections

http://library.du.edu/site/about/specialCollections/specialCollections.php

Aurora Genealogical Society

http://www.freewebs.com/auroragenealogysociety/

Boulder Genealogical Society

http://www.rootsweb.ancestry.com/~bgs/

Colorado Society of Hispanic Genealogy

http://www.hispanicgen.org/

Columbine Genealogical and Historical Society

http://www.columbinegenealogy.com/

Foothills Genealogical Society

http://www.foothillsgenealogy.org/

Larimer County Genealogical Society

http://www.lcgsco.org/

Longmont Genealogical Society

http://www.rootsweb.ancestry.com/~colgs/

Pike’s Peak Genealogical Society

http://ppgs.org/

Weld County Genealogical Society

http://www.rootsweb.ancestry.com/~cowcgs/

Bessemer Historical Society – Steelworks Museum

http://www.steelworks.us/

Heritage West

http://heritagewest.coalliance.org/institutions