Another new database at the Colorado State Archives (CSA) allows you to locate birth entries in the “Denver, Boulder and Elbert County Pre-1907 Birth Index.” Kit Carson County is also included. (Note: births shown in Denver County prior to 1901 actually occurred in Arapahoe County.)
Here is part of the database description at the CSA Web site:
The kind of information usually found on these early birth records is the baby’s name … date of birth, physician, the father’s name and occupation and the mother’s maiden name. If someone applied for a delayed birth certificate for a pre-1908 Denver birth, there may also be a court file available which is referenced on the birth record.
There are currently over thirty-two thousand entries in the database:
The earliest birth recorded in the database occurred in 1863 (William Clarence Hamilton), but there are only ten births indexed for all of the 1860s. The first year which includes more than a thousand entries is 1893. Here are two sample entries:
Name Record Type County Date MALONE, DWIGHT PATRICK Birth Denver 1898-NOV-4 MALONE, ETHEL MARY Birth Denver 1901-JUN-1
Both Dwight and Mary were the children of Ernest J. and Jessie Malone, as seen in the 1900 (Denver) and 1910 (Portland, Oregon) censuses.
You can search this database at kiwi.state.co.us/archive/publicrecordsearch.do. Specify “Birth” as the Record Type. Tip: To search for a surname which is also a given name (such as Gordon), include the comma in the Name field (Gordon, ). Instructions for accessing or ordering the original records can be found on the CSA Web site.
 1900 U.S. census, Arapahoe County, Colorado, Denver ward 12 precinct 2, E.D. 100, sheet 11A (27 front), dwelling 235, family 249 (Ernest J. Malone); National Archives microfilm T623, roll 119. See image at Ancestry or Heritage Quest.
 1910 U.S. census, Multnomah County, Oregon, Portland ward 7 precinct 45, E.D. 178, sheets 8A & 8B (75 front & back), dwelling 181, family 181 (Jessie Malone); National Archives microfilm T624, roll 1288. See image at Ancestry or Heritage Quest.