The Howard Wright Construction Company broke ground at the Space Needle site on April 17, 1961. The result of a design collaboration among businessman Edward E. Carlson, architect John Graham and University of Washington architecture professor Victor Steinbrueck, the Space Needle was built for the 1962 Century 21 Exposition (World's Fair) in Seattle. With the addition of the final torch tower, the construction of the 600 foot Space Needle was completed on December 8. 1961. Seattle's Pacific Car and Foundry Company was the subcontractor for the steel fabrication and erection.

This photo shows workers inside the observation deck and restaurant space at the top of the Space Needle. When the Space Needle officially opened on April 21, 1962, the revolving restaurant moved with an electric motor of just one horsepower, so perfectly balanced was the top house of the Needle.

Stamped on verso with business stamp of Roger Dudley, Commercial Photographer, Seattle
Printed on lower right border on photo: Space Needle, John Graham & Co. Architects, Howard S. Wright Construction Co.
A schematic of the footprint of the Space Needle is printed in the lower left border of the photograph, with an arrow drawn to indicate the viewpoint.

Caption information source: Space Needle USA by Harold Mansfield and George Gulacsik, 1962.
Caption information source: https://www.spaceneedle.com/history/