Caption reads: "No. 4218. Treasury Tunnel. Ouray, Colorado. Officials of the project grouped around one of the maps of the project. Left, Attorney for Sunshine Mining Co., John R. Austin Supt., for Stiers Bros., Oscar H. ...

Site of the Wilfley Lease Company mine and mill in the snow, with slopes showing mine activity in the background.

Men in and near dredge boat compartments, working on construction, Fairplay placers.

View of the side of a building, at a mill site, with windows staggered down its walls.

A man in a chef's apron standing at a stove in the kitchen of the London Mines & Milling Company.

View of a mine of the American Mining Syndicate, with buildings and a ramp, built on a slope.

Five men, one of whom is John Austin, wearing suits and hats stand in front of the Treasury Tunnel portal; the portal has the sign, "Treasury Tunnel Safety First."

Hamm Mining & Milling company office, built of brick with decorative wrought iron hand rails, on a dirt lot.

A truck, equipment, and buildings near a placer operation in Park County.

Caption reads: "Veta Mines, Inc.; Veta."