Colorado Directories

Directories of heads of households have been published for major cities in Colorado. The Family History Library, for example, has Denver directories for:

1859	FHL fiche 6043861
1860-1935	FHL films 1376794
1913, 1941, etc.	FHL book 978.883/D1 E4p

The Colorado Historical Society has similar holdings, as well as directories for smaller cities.

Online Resources

http://www.distantcousin.com/Directories/CO/

http://olddirectorysearch.com/Denver__Colorado_1892/index.html

http://www.colorado.gov/dpa/doit/archives/dcd/dcdhome.htm

http://www.uscitydirectories.com/co.htm

Family History Library (FHL); now called, FamilySearch Library (FSL)