80. Stars seen with naked eye and telescope. (Copyright)
79. Stars of autumn and key.
78. Stars of summer and key.
77. Stars of spring and key.
76. Stars of winter and key.
75. Circumpolar stars and key.
74. Klepesta's fireball, Sept. 12, 1923.
73. Halley's Comet, May 13, 1910. (Lowell Obs.)
72. Morehouse's Comet, Nov. 16, 1908. (Barnard, Y.O.)
Note: this image is a thumbnail only.
71. Brooks' Comet, Oct. 23, 1911. (Barnard, Y.O.)
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