Subway Construction.
6th Aveune Subway Construction, 30th Street.
6th Avenue Subway Construction, 17th Street.
6th Avenue Subway Construction, 18th Street.
6th Avenue Subway Construction, 16th Street.
6th Avenue Subway Construction, 13th Street.
WPA [PWA] Construction
6th Avenue Subway Construction, 15th Street.
6th Avenue Subway Construction, 26th Street.