2021 Book-Calendar

The HDC 2021 Book-calendar was released on August 1rd 2020. The 2021 Book-calendar, Explosion of Growth is the sixth and last of the six-year series of Telling the History of Douglas County. The 2021 Book-calendar covers the era of 1990 to 2020 …a time encompassing when Douglas County was the fastest growing county in the United States. Learn more about the 2021 Book-calendar and how to obtain one at 2021 Book-calendar, Explosion of Growth.

Douglas County Libraries’ Monthly Events

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Historic Douglas County, Inc. Mission:

The purpose of Historic Douglas County is to expand and enrich public awareness of Douglas County history through education and communication, and through support and coordination among local historical organizations and other related groups.

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Douglas County Venues on the State and County Registers

Colorado State Register of Historic Places

Douglas County has five historic structures on the Colorado Register of Historic Places and thirty-three venues within the county that carry County Landmark designations. Along with the Nationally Registered Places, HDC encourages you also to visit these State and County historic venues. A Centennial Ranch and Farm recognition also exists for ranches or farms that have been in owned and operated by families for 100 years or more. Below is a listing of each Douglas County venue appearing on the State Register of Historic Places. The registration information, the registration number and a brief description of the venue come from the History Colorado website.

The Douglas County Landmarks (“local”) can be found on the Douglas County Historic Preservation website.

Information and listings of Colorado Centennial Ranches and Farms(“local”) can be found on the Centennial Ranches and Farms.

Castlewood Dam

Location: 2989 South Colorado Highway 83, Franktown, Colorado 80116

State Register 9/13/1995, 5DA.567

Castlewood Dam was built to provide irrigation for the agricultural development of Douglas County. Constructed upon a poor foundation, it became controversial shortly after its construction in 1890. In August of 1933, the dam collapsed sending a wall of water 1/2 mile wide and 15 feet high through Denver. This disaster resulted in the development of a comprehensive flood control program for Cherry Creek that led to the construction of the Cherry Creek Dam and reservoir.

Rock Ridge Ranch Barn

Location: 7054 South Colorado Highway 83, Franktown, Colorado 80116

State Register 11/9/1994, 5DA.1010

The circa 1880 barn is a rare surviving example of pegged, post and beam construction. A common construction method in the 18th and early 19th centuries involving skilled craftsmen, the mass production of wire nails after 1900 brought an end to pegged construction.

Lone Tree School

Location: Off Tall Horse Trail, 7 miles south the Highways 105/67 junction south of Sedalia, Colorado 80135

State Register 3/8/1995, 5DA.344

The 1922 school exemplifies rural educational methods as dominated by a pattern of small one-room schoolhouses.

Lamb Spring

Location: Littleton Outskirts Area

State Register 11/9/1994, National Register 3/13/1997, 5DA.8

This archaeological site contains evidence of hunting and game processing that may pre-date 9,500 BC, a period before the earliest well accepted archaeological evidence of human activity in the Americas.

Tallman-Newlin House

Location: Callaway Road, Parker, Colorado 80138

State Register 12/10/1997, 5DA.1090

Originally built in 1866 as a log cabin by John and Elizabeth Tallman, the house received a new look by the turn of century while under the ownership of William Gilpin Newlin and his wife, Elizabeth. The house exemplifies log construction “updated” by the application of wood siding. Relocated to save it from demolition, it will be used as an educational tool to illustrate early local building practices and materials.

Non-profit and Mailing Address Info | Box 2032 | Castle Rock | Colorado 80104
IRS Non-profit certified under the 501(c)3 section of the Internal Revenue Code: EIN: 26-4211562; DLN: 17053091004039
Registered as a Non-profit Corporation in the State of Colorado: 20091055341