Yerkes Observatory Collection

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Alvan G. Clark and Carl A. R. Lundin sit alongside the heavy cell which contains the 2-element Yerkes observatory 40-inch lenses
Alvan G. Clark and Carl A. R. Lundin sit alongside the heavy cell which contains the 2-element Yerkes observatory 40-inch lenses
American Association of Variable Star Observers at Yerkes Observatory, September 5, 1925
American Association of Variable Star Observers at Yerkes Observatory, September 5, 1925
Association of Midwest Astronomers with Yerkes Observatory Staff, May 22, 1925
Association of Midwest Astronomers with Yerkes Observatory Staff, May 22, 1925
Attendes at the 4th conference of the International Union for Co-operation on Solar Research
Attendes at the 4th conference of the International Union for Co-operation on Solar Research
Barnard with Willard Lens Mounting
Barnard with Willard Lens Mounting
Calcium flocculi observed by Hale, at the Yerkes Observatory
Calcium flocculi observed by Hale, at the Yerkes Observatory
Chicago Newspaper clipping 1892-1897 on establishment of Yerkes Observatory
Chicago Newspaper clipping 1892-1897 on establishment of Yerkes Observatory
Construction of the Yerkes Observatory in progress
Construction of the Yerkes Observatory in progress
Four unidentified men surround the tube of a photoheliograph and photographic house
Four unidentified men surround the tube of a photoheliograph and photographic house
Friess Spectrometer at Yerkes Observatory, circa 1898
Friess Spectrometer at Yerkes Observatory, circa 1898
Group at the dedication of the Yerkes Observatory
Group at the dedication of the Yerkes Observatory
Group sits on steps at the Yerkes Observatory
Group sits on steps at the Yerkes Observatory

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