Blasting rock during the construction of highway through Glenwood Canyon. The Colorado River is at the right; there is snow on the hills in the background. Large rocks in foreground with debris from the blast rising in the air in center midground. [Title supplied from catalog prepared by the Eagle County Historical Society.]

Road Construction in Glenwood Canyon, 1936-1937. C. A. Switzer involved in the construction (Denver bridge builder who built the Dotsero and Eagle Bridges). Man in crane bucket with vehicles parked around the crane. Woman in midground. [Title supplied from catalog prepared by the Eagle County Historical Society.]