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 tunnel.

9th Street in Brooklyn.

Unidentified street and railroad tracks.

Opposite Trinity Cemetery.

Northern section of land tunnel.

Central Avenue bridge.

Sea Beach Line at 5th Avenue.

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

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

Church Street.

Southbound express tunnel.

Church Street.

Liberty Street.

60th Street.

32 West 28th Street.