Prehistoric cultural affiliation(s) include Proto Historic, Archaic, Early And Middle Ceramic, Paleo-Indian, Pre-Clovis, Eary Archaic and Woodland dating back to 10999 BC.
Several famous people are associated with these Douglas County historic places including Benjamin Quick and John Kinner.
Some of the country's most noteable architects helped create the Douglas County places including E.I. du Pon de Nemours and Company, Benjamin Quick, Benjamin Hammar, John Blunt, John Kinner, Horace Greeley Knapp, Colorado Department of Highways, N. S. Grout, John Geiger and Jules Jacques Benoit Benedict. Prominent architectural styles found in Douglas Country are Late Victorian, Late 19th And 20th Century Revivals and Bungalow/Craftsman.