retrofutureground: Yerkes Observatory, Solar prominences around entire disk, 01-04-1916. Lantern slide; 5.8 x 5.7 cm
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from: https://midnightclusterfuck.tumblr.com/post/122280695010
recommended: midnightclusterfuck tumblr, SugarBaby #lenchikkraft Sukebei lenfantdemer SunDressesGoneWild