[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 Trylon and Perisphere in the background.]
[Construction at the New York World's Fair site, showing Trylon and Perisphere.]
[Construction at the New York World's Fair site, showing Perisphere, Helicline and Trylon.]
[Photographer taking picture of the New York World's Fair site, with the Trylon and Perisphere visible in the background.]
[Construction of the 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 steel frames of the Trylon and Perisphere visible.]
[Construction of the New York World's Fair site, with the steel frames of the Trylon and Perisphere in the background.]
[Construction of the Trylon, Perisphere and Helicline at the 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.]
[Construction of Electrical Products building with frame of Trylon in background, New York World's Fair site.]
[Site of the New York World's Fair, showing the frames of the Trylon and Perisphere.]
[Site of the New York World's Fair, showing the Trylon and Perisphere under construction.]
[Grounds of the New York World's Fair, with the Trylon and Perisphere in the background.]
