Colour print of the visible surface of the Sun
1872
Set of eight colour lithographs with window mounts of colour sketches showing the sun, sunspots, prominences and two views of the corona at two separate solar eclipses. Drawn by Etienne Leopold Trouvelot & Prof Holden in 1872. Supervised by Prof. Winlock and published in the Annals of the Harvard College Observatory in 1876 with money from the Bache Fund.
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