[Construction of Electrical Products building with frame of Trylon in background, New York World's Fair site.]
[Trylon under construction, New York World's Fair site.]
[Electrical Products building with the frame of the Trylon in the background, New York World's Fair site.]
[Construction of the Helicline, Trylon and Perisphere, New York World's Fair site.]
[Construction of the Trylon and Perisphere, New York World's Fair site.]
[Construction of the New York World's Fair site, with the steel frames of the Trylon and Perisphere in the background.]
[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 New York World's Fair site, with the frame of the Trylon in the background.]
New York Worlds Fair. Perisphere and Trylon steel frame
[New York World's Fair. Electrical Products Building. Construction view.]
[Construction of the Trylon at the New York World's Fair site.]
[Construction of the New York World's Fair site, showing the steel frame of the Perisphere.]
[Construction of the Trylon and Perisphere, seen from the Administration building, 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.]