[Detail of bobsled course at the New York World's Fair.]

[Detail of bobsled course at the New York World's Fair.]

[Detail of bobsled course, New York World's Fair.]

[Detail of bobsled course, New York World's Fair.]

[Bobsled course in the Amusement Zone, New York World's Fair.]

[Construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[Marine Transportation building under construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]

[New York World's Fair site under construction.]

[Chrysler pavilion, New York World's Fair site under construction.]

[Construction at the New York World's Fair site.]

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

[Men working at the New York World's Fair construction site.]

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

[Construction at the New York World's Fair site.]

[Construction at the New York World's Fair site.]