[Subway from library.]

[Subway construction.]

[Subway construction.]

[Subway construction.]

Subways

[Subway construction.]

[Subway Excavation]

Subway Construction.

Subway

[Subway construction.]

Subway Construction.

[Subway construction at Broadway, north from 100th Street.]

[Construction of the 14th Street subway.]

[Entrance of subway, looking south from 123rd Street.]

Subway Construction.

Subway Construction.

Subway Construction.

Subway Construction.

Subway Construction.

Subways and Tunnels, Manhattan Island