Queensboro Tunnel.

Queensboro Tunnel.

Interiors, Queensboro Corp., 82nd St. and Polk Ave., Jackson Heights, L.I., Fireplace and Nook.

Southbound express tunnel.

Fire Dept., Engine Co. #30, Horse Drawn Engine and Men.

Office of Chief Engineers, R. Martens & Co. Inc.

R. Martens & Co. [Proof Sheet].

Excavation for New Amsterdam Theatre 42nd St.

St. John the Divine.

St. John the Divine.

The Metropolitan Life Company.

Typical Pressure Tunnel Construction Shaft [Catskill System.]

West Side of Fifth Ave. 57 to 58 Sts.

St. John the Divine.

Cadillac Hotel.

Carnegie Trust Co.

Empire Theatre.

[Constructing the McAdoo Tunnel.]

Bonticou Grade Tunnel Portal and Bonticou Crag [Catskill System.]

Belasco Theatre.