Astronomical equipment, glass slides (24) in wooden box, glass / paper / wood, made by Yerkes Observatory, Williams Bay, Wisconsin, United States of America, 1904-1919, used at Sydney Observatory, Sydney, New South Wales Australia, 1919-1930 A set of 24 glass slides, each one showing the characteristic spectrum of a particular celestial object. Each slide is in a paper envelope. The slides are stored together in a wooden box with a lid. Observatory Stock No 102.
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(Accession num: H10030)
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