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