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13 results.
Photograph Album 1:1 (2008-242)Series VI: Yerkes Observatory
Informal 2Series I: Individuals and Groups
Informal 8:1940 (2008-003)Series VI: Yerkes Observatory
Spectrometer 1Series I: Individuals and Groups
Group 1Series I: Individuals and Groups
Observing 9Series II: Buildings and Grounds
12-inch Refractor Telescope 23:2047 (2008-003)Series VI: Yerkes Observatory
12-inch Refractor Telescope 23:2050 (2008-003)Series VI: Yerkes Observatory
Spectrometer 23:808 (2008-003)Series VI: Yerkes Observatory
Spectrometer 54:3182 (2008-003)Series VI: Yerkes Observatory
Spectrometer 54:3186 (2008-003)Series VI: Yerkes Observatory
Spectrometer 54:3187 (2008-003)Series VI: Yerkes Observatory
Spectroscope 26:186 (2008-003)Series VI: Yerkes Observatory