Astronomy, astronomical Observatory, Harvard, comet
"Der Donastishe Koment an 5. Oktober 1858"
"Nach Annals of the astronomical Observatory of Harvard College, 1876."
Xylograph published ca 1905. Below the image and on the reverse side is text in German about comets, the earth's rotations and other aspects of astronomy.
Original antique print
Image: 14.5 x 12.5 cm ( 5.7 x 4.9")