[Constructing the subway in Queens.]
In Commemoration of the Construction Work on the Dual Subway System in the Borough of Queens, New York City
[Subway construction.]
Subway Construction.
[Construction of the Houston Street subway.]
Queens Boulevard. Looking east showing steam shovel in subway excavation.
[Construction of the 14th Street subway.]
[Digging subway tube under East River for Queensboro Subway.]
6th Avenue Subway Construction, 17th Street.