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Monthly Archives: November 2012

A page of one volume of the “Henry Draper Catalogue” redacted into a poem. (This volume is “Annals of the Astronomical Observatory of Harvard College,” v. 96, published 1921.)  The overlying image is a photograph from the frontispiece to the volume; the “Preface” to the volume explains that this illustration is “typical of those used by Miss Cannon in her classification of the spectra.”