Echelle Spectrograph

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  AA Spectrograph

  Additional Formats

  [Incl ltr M. D. Waterworth to ISB. folded]

  Bowen

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  Wynne Spectrograph

  Additional Formats

  [Incl ltr C. C. Wheeler {Perkin-Elmer} to ISB. folded]

  Bowen

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  Image Tube Spectrograph Gratings, etc

  Additional Formats

  [Incl c.memo ISB to Image Tube Nebular Spectrograph Committee; c.ltr John D. Lytle to Bob Pondexter {Boller & Chivens}. [folded]

  Bowen

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  Spectrographs

  Additional Formats

  [Incl blueprints & c.blueprints; c.ltr R. Lynds to ISB]

  Bowen

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  Properties of Spectrographs

  Additional Formats

  [Incl c.memo Leo Goldberg to Distribution]

  Bowen

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  Image Tube Spectrograph [#2]

  Additional Formats

  [Incl c.ltr ISB to WABaum]

  Bowen