This “double house” was likely constructed by Mrs. Elizabeth Trevartha and her daughter, Mrs. Ada Trevartha Nicholls, around 1906. Elizabeth Trevartha is shown in the 1910 census as a widow who lived in Denver with another daughter, Molly, and Molly’s children, but did not reside at 1064-1066 Clarkson. Mrs. Ada Nicholls, her husband John H. Nicholls, and their children, Irving H. and Annette “Nettie” Nicholls, appear to have been the primary residents of the building for at least two decades. It appears that they rented out the other half of the building to a series of tenants.
