Subway Construction.

Subway Construction.

Subway Construction.

Subway Construction.

Subway Construction.

Subway Construction.

Subway Construction.

6th Avenue Subway Construction, 16th Street.

6th Avenue Subway Construction, 18th Street.

6th Avenue Subway Construction, 17th Street.

6th Avenue Subway Construction, 13th Street.

6th Avenue Subway Construction, 16th Street.

6th Avenue Subway Construction, 18th Street.

6th Avenue Subway Construction, 16th Street.

WPA [PWA] Construction

6th Avenue Subway Construction, 14th Street.

6th Avenue Subway Construction, 18th St.

6th Avenue Subway Construction, 24th Street.

6th Avenue Subway Construction, 17th Street.

6th Avenue Subway Construction, 16th Street.