[Men talking at construction site.]

[Men working at a construction site.]

[Construction of 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 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, showing the steel frame of the Perisphere.]

[Construction site.]

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

[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.]

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

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