[Subway construction.]
[Construction of the 14th Street subway.]
[Subway construction at Broadway, north from 100th Street.]
[Subway construction on Broadway near 135th Street.]
[Constructing the subway, Queens.]
Sixth Avenue subway construction.
[Subway from library.]
[Constructing the subway in Queens.]
Subway Construction.
6th Avenue Subway Construction, 14th Street.
6th Avenue Subway Construction, 16th Street.
6th Avenue Subway Construction, 18th Street.