Mabelle Robertson (later Mrs. Robert Redwood) in front of automobile with Arizona license plates at the Avon Depot. Daughter, Billy Jo, dressed for cold weather, is seated on the hood of the automobile. [Title supplied from catalog prepared by the Eagle County Historical Society.]

Entrance to the Carlton tunnel in 1932, in the snow. The Busk-Ivanhoe Tunnel was built by the Busk Tunnel Railway Company for the Colorado Midland Railroad in 1891 as a replacement for the Hagerman Tunnel at a lower, more direct route. It connected Aspen and Leadville. The tunnel was abandoned following Colorado Midland's 1897 bankruptcy and was converted to one-way auto traffic in 1922 as the Carlton Tunnel, a toll tunnel carrying then-State Highway...