Typical Pressure Tunnel Construction Shaft [Catskill System.]
Drilling and Mucking Bench [of] Lower Half of Tunnel [Catskill System.]
Rondout Pressure Tunnel Showing Partial and Total Concrete Lining [Catskill System.]
Interior of Typical City Tunnel Shaft Chamber [Catskill System.]
Bonticou Grade Tunnel Portal and Bonticou Crag [Catskill System.]
Deepest City Tunnel Shaft Compared With Height of Woolworth Building [Catskill System.]
By-Pass Aqueduct Around Kensico Reservoir 11 Feet in Diameter [Catskill System.]
New Croton Aqueduct - Shaft 25, 179th Street Pumping Station and Washington Bridge [Croton System.]
Bucket Used to Lower Men and Materials During Sinking of Tunnel Shafts [Catskill System.]
Dividing Weir and Dike, Ashokan Reservoir [Catskill System.]
135th Street Gate House - Interior [Croton System.]
Ashokan Reservoir From High Point 3200-Feet Above Water Surface [Catskill System.]
Bryn Mawr Connection Chamber at Commencement of Yonkers Pressure Tunnel [Catskill System.]
135th Street Gate House - Exterior [Croton System.]
New Croton Aqueduct - Typical Horseshoe Section in Open Cut [Croton System.]
New Croton Aqueduct - Cast-Iron Section Lining [Croton System.]
Upper Gate Chambers, Dividing Dike and Weir and Ashokan Bridge [Catskill System.]
Typical Stages of Cut-and-Cover Construction [Catskill System.]
Ashokan Reservoir Basin Before Construction [Catskill System.]
Yonkers Pressure Tunnel, 16-Feet, 7 Inches in Diameter [Catskill System.]