[Construction of the New York World's Fair site. Production and Distribution building, with the frames of the Trylon and Perisphere in the background.]
[Construction of Electrical Products building with frame of Trylon in background, 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.]
[Electrical Products building with the frame of the Trylon in the background, New York World's Fair site.]
[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 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 visible.]
[Construction of the New York World's Fair site, with the Trylon and Perisphere in the background.]
[Construction of the New York World's Fair site. Detail of the Production and Distribution building.]
[New York World's Fair site under construction, with the steel frame of the Trylon in the background.]
[Construction of the Helicline, Trylon and Perisphere, New York World's Fair site.]