Editorial use only.
Yerkes 40-inch refractor telescope being exhibited at the 1893 Columbian Exposition, on Columbia Avenue in the Manufactures and Liberal Arts Building. The World Fair of 1893 in Chicago, USA, also known as the World's Columbian Exposition, took place from May to October of that year. This 40-inch refractor telescope was the largest of its kind in the world. It was installed at the Yerkes Observatory (opened 1897), founded by George Hale with a grant from businessman Charles T. Yerkes. The notice on the side of the telescope refers to the University of Chicago and the telescope manufacturers Warner and Swasey of Cleveland, Ohio, USA.
Model release not available. Property release not required.