* [https://archive.org/details/theorysound00raylgoog The Theory of Sound vol. I] (London : Macmillan, 1877, 1894) (alternative link: [http://gallica.bnf.fr/ark:/12148/bpt6k951307 Bibliothèque Nationale de France] OR (Cambridge: University Press, reissued 2011, )
* [https://archive.org/details/theorysound05raylgoog The Theory of Sound vol.II] (London : Macmillan, 1878, 1896) (alternative link: [http://gallica.bnf.fr/ark:/12148/bpt6k95131k Bibliothèque Nationale de France]) OR (Cambridge: University Press, reissued 2011, )
* [https://archive.org/details/scientificpaper01raylgoog Scientific papers (Vol. 1: 1869–1881)] (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
* [https://archive.org/details/scientificpapers02rayliala Scientific papers (Vol. 2: 1881–1887)] (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
* [https://archive.org/details/scientificpapers03rayliala Scientific papers (Vol. 3: 1887–1892)] (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
* [https://archive.org/details/scientificpapers04rayliala Scientific papers (Vol. 4: 1892–1901)] (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
* [https://archive.org/details/scientificpapers05rayliala Scientific papers (Vol. 5: 1902–1910)] (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
* [https://archive.org/details/scientificpapers06rayliala Scientific papers (Vol. 6: 1911–1919)] (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )