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

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

[Construction of the Trylon and Perisphere at the New York World's Fair site.]

[New York World's Fair site during construction, showing the steel frames of the Trylon and Perisphere.]

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

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

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

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

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

[Construction of the Trylon, Perisphere and Helicline at the New York World's Fair site.]

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

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

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

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

[New York World's Fair. Surveyors in transportation area. Construction view.(With the Trylon and Perisphere in the background.).]

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

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

[Construction of the Trylon and Perisphere at the New York World's Fair site.]

[Construction of the Trylon and Perisphere at the New York World's Fair site.]

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