Contemporary accounts

A determination of the Deflection of light by the Suns gravitational from observations made at the total eclipse of May 29, 1919. Dyson, F. W., Eddington, A. S. & Davidson, C., 1920, Phil. Trans. R. Soc., 220, 291.

The eclipse expedition to Sobral. Crommelin, A. C. D. 1919. Obs. Magazine 42, No 544, p.368

Report of the Astronomer Royal to the Board of Visitors of the Royal Observatory, Greenwich, Read at the Annual Visitation of the Royal Observatory, 1919 June 14. Dyson, F. W.

The principle of generalized relativity and the displacement of Fraunhofer Lines toward the red. St John, C. E., 1917, ApJ, 46, 249

Eddington papers, A4/9, Trinity College, Cambridge, Library

Collected Papers of Albert Einstein, Vol 9, The Berlin Years, Correspondence, Jan 1919 – April 1920, page 98, letter 113. Princeton. Eds. Buchwald, D. K., Schulmann, R., Illy, J., Kennefick, D. J., Sauer, T.

More recent works

Ninth Astronomer Royal – A life of Frank Watson Dyson, pp.191–94. Margaret Wilson (1951)

Expeditions for the observation in Sobral, Brazil, of the May 29, 1919 total solar eclipse. Crispino, L. C. B., 2018, Int. J. Mod. Phys. D, 27 No 11, 1843004. (paywall)

Gravitational deflection of light – a re-examination of the observations of the solar eclipse of 1919. Harvey, G. M., 1979, Obs. Magazine, 99, 195

Not Only Because of Theory: Dyson, Eddington, and the Competing Myths of the 1919 Eclipse Expedition. Kennefick D. (2012). In: Lehner C., Renn J., Schemmel M. (eds) Einstein and the Changing Worldviews of Physics. Einstein Studies, vol 12. Birkhäuser Boston

Bending space-time: a commentary on Dyson, Eddington and Davidson (1920) ‘A determination of the deflection of light by the Sun's gravitational field’. Longair, M.,  2015,  Phil. Trans. R., Soc.,  A373:20140287

Collected papers based on the presentations at the 7th international conference on the history of general relativity, La Orotava, Spain, March 6–13, 2005. Beckman and Eric Stengler.