[Men working at the New York World's Fair construction site.]

[Men working at the New York World's Fair construction site.]

[New York World's Fair site under construction.]

[Construction of the New York World's Fair site, with the frames of the Trylon and Perisphere in the background.]

[Construction of the New York World's Fair site.]

[Construction of the New York World's Fair site.]

[Construction of the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction of the Perisphere, New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction of the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Man working at the New York World's Fair construction site.]

[Construction of the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction of the New York World's Fair site.]

[Construction of the New York World's Fair site.]

[Construction of the New York World's Fair site.]