[Comets]
Negative
[Comets]
Gelatin silver negative
8.5x6.5 in.
Gift of New York Public Library
1974.0056.1236
Inscriptions (inscription on photograph) "Fig. 22.-Photograph of Swift's Comet.
taken by Prof. Barnard 24 h. later. Exposure, 50m."
taken by Prof. Barnard 24 h. later. Exposure, 50m."
