The Boulder Pioneers Project is looking at as many original source records as we can locate for Boulder County, Colorado in the Territorial Period (prior to statehood in 1876). We will be posting updates on our Facebook page, and publishing indexes from our research available in the major genealogical libraries around the country, or for purchase on When we get a new index ready, we’ll announce it here. We’re also interested in building a county-wide family tree staring with the pioneers on If you have a Boulder Pioneer ancestor and would like to add descendant information, please contact us at

Our research (so far) has taken us to:
Colorado State Archives

Carnegie Branch Library for Local History (including the Boulder Historical Society Collection)

University of Colorado Archives

University of Colorado Heritage Center

History Colorado Archives

Boulder County Clerk & Recorders Office

Boulder City Clerk’s Office

Boulder County Commissioners Office

Grand Lodge of Colorado, A.F. & A. M.

Grand Lodge of Colorado, IOOF

Nebraska Historical Society

Union Pacific Railroad Historical Society

Fort Sedgwick Archives


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