Williams Bay (Wis.)

George Hale
Attendees at Yerkes Observatory Conference
View of the 40-inch refracting telescope at Yerkes Observatory
Chandrasekhar, Kuiper and Struve converse
Refractor Telescope at the Yerkes Observatory
Portrait of S. Chandrasekhar with Wife
The 40-inch Yerkes Observatory refracting telescope
Yerkes Observatory 24-inch reflector telescope
Friess Spectrometer at Yerkes Observatory, circa 1898
William W. Morgan taking the 10,000th spectroheliogram at Yerkes Observatory
The Snow Horizontal telescope with a good view of the heliostat
William W. Morgan at the Bruce Telescope, Yerkes Observatory
Interior of the Yerkes Observatory heliostat room with its radiometer experiment
William Hiltner
The polar axis of the Yerkes Observatory 40-inch refractor being lowered into position
Williams Bay Domestic Science class at the Yerkes Observatory
Yerkes Observatory staff in August 1919
Members of the National Academy of Sciences visit Yerkes Observatory, November 18, 1903

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