Unidentified street.
Unidentified track tunnel.
Unidentified elevated railroad platform.
Unidentified subway tracks.
Unidentified tunnel.
Northern section of land tunnel.
Sea Beach Line right-of-way at 21st Avenue.
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, north near 11th Avenue.
Sea Beach Line and Long Island Railroad cut, northwest to near 11th Avenue.
Sea Beach Line, Avenue R.
Sea Beach Line, 11th Avenue.
Eighth Avenue.
8th Avenue and West 115th Street.
Broadway and Myrtle Avenue.
Construction on East 42nd Street.
Smith and Union Streets.
Sea Beach Line, 18th Avenue, with building support.