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  * [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, )
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  * [https://archive.org/details/scientificpapers02rayliala Scientific papers (Vol. 2: 1881–1887)] (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
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  * [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, )
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