Unidentified subway tracks.

Shaft No. 4, Steinway Tunnel.

Railroad tunnels and bridge, south of Central Avenue.

Man inside the southern end of a river tunnel.

Right-of-way on portal.

Unidentified street and railroad tracks.

9th Street in Brooklyn.

Unidentified tunnel.

Central Avenue bridge.

Opposite Trinity Cemetery.

Northern section of land tunnel.

Sea Beach Line at 5th Avenue.

Sea Beach Line cut supporting building foundation, Fort Hamilton Parkway.

Church Street.

Sea Beach Line and Long Island Railroad at 5th Avenue, looking west to 4th Avenue.

Southbound express tunnel.

Church Street.

60th Street.

32 West 28th Street.

Liberty Street.