Unidentified tunnel.
Unidentified subway tracks.
Northern section of land tunnel.
Unidentified railroad tracks.
Southbound express tunnel.
Unidentified street.
Unidentified elevated railroad platform.
Sea Beach Line right-of-way at 21st Avenue.
Sea Beach Line at 19th Avenue.
Subway tunnel construction at Lexington Avenue and 97th Street.
Sea Beach Line, Avenue R.
Sea Beach Line, 11th Avenue.
Sea Beach Line, 18th Avenue, with building support.
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.
Eighth Avenue.
Smith and Union Streets.