Unidentified tunnel.
Unidentified track tunnel.
Unidentified subway tracks.
Southbound express tunnel.
Sea Beach Line right-of-way at 21st Avenue.
Unidentified railroad tracks.
Unidentified street.
Sea Beach Line at 19th Avenue.
Sea Beach Line and Long Island Railroad cut, north to 9th Avenue.
Sea Beach Line and Long Island Railroad cut, northwest to near 11th Avenue.
Sea Beach Line and Long Island Railroad cut, north near 11th Avenue.
Sea Beach Line, Avenue R.
Sea Beach Line, 11th Avenue.
Unidentified elevated railroad platform.
Central Avenue bridge.
Subway tunnel construction at Lexington Avenue and 97th Street.
Ring #97 Northbound Express tunnel.
Sea Beach Line, 18th Avenue, with building support.
Park Avenue.