<p>Negative of the 1919 solar eclipse taken from the report of Sir <a href="//commons.wikimedia.org/wiki/Category:Arthur_Stanley_Eddington" title="Category:Arthur Stanley Eddington">Arthur Eddington</a> on the expedition to verify Einstein's prediction of the bending of light around the sun. For positive version, see <a href="//commons.wikimedia.org/wiki/File:1919_eclipse_positive.jpg" title="File:1919 eclipse positive.jpg">Image:1919 eclipse positive.jpg</a>. 
</p><p>Original caption:
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<dl><dd>In Plate 1 is given a half-tone reproduction of one of the negatives taken with the 4-inch lens at Sobral. This shows the position of the stars, and, as far as possible in a reproduction of this kind, the character of the images, as there has been no retouching. A number of photographic prints have been made and applications for these from astronomers, who wish to assure themselves of the quality of the photographs, will be considered as as far as possible acceded to.</dd></dl>
F. W. Dyson, A. S. Eddington, and C. Davidson
1919-05-29
F. W. Dyson, A. S. Eddington, and C. Davidson, "A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Total Eclipse of May 29, 1919" <i>Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character</i> (1920): 291-333, on 332.