Shelley died leaving many of his works unfinished, unpublished or published in expurgated versions with multiple errors. There have been a number of recent projects aimed at establishing reliable editions of his manuscripts and works. Among the most notable of these are:[183][184]
- Reiman, D. H. (gen ed), The Bodleian Shelley Manuscripts (23 vols.), New York (1986–2002)
- Reiman, D. H. (gen ed), The Manuscripts of the Younger Romantics: Shelley (9 vols., 1985–97)
- Reiman, D. H., and Fraistat, N. (et al.) The Complete Poetry of Percy Bysshe Shelley (3 vols.), 1999–2012, Baltimore, Johns Hopkins University Press
- Cameron, K. N., and Reiman, D. H. (eds), Shelley and his Circle 1773–1822, Cambridge, Mass., 1961– (8 vols.)
- Everest K., Matthews, G., et al. (eds), The Poems of Shelley, 1804–1821 (4 vols.), Longman, 1989–2014
- Murray, E. B. (ed), The Prose Works of Percy Bysshe Shelley, Vol. 1, 1811–1818, Oxford University Press, 1995
Shelley's long-lost "Poetical Essay on the Existing State of Things" (1811) was rediscovered in 2006 and subsequently made available online by the Bodleian Library in Oxford.[185]
John Lauritsen[186] and Charles E. Robinson[187] have argued that Shelley's contribution to Mary Shelley's novel Frankenstein was extensive and that he should be considered a collaborator or co-author. Professor Charlotte Gordon and others have disputed this contention.[188] Fiona Sampson has said: "In recent years Percy's corrections, visible in the Frankenstein notebooks held at the Bodleian Library in Oxford, have been seized on as evidence that he must have at least co-authored the novel. In fact, when I examined the notebooks myself, I realised that Percy did rather less than any line editor working in publishing today."[189]
The Keats–Shelley Memorial Association, founded in 1903, supports the Keats–Shelley House in Rome which is a museum and library dedicated to the Romantic writers with a strong connection with Italy. The association is also responsible for maintaining the grave of Percy Bysshe Shelley in the non-Catholic Cemetery at Testaccio. The association publishes the scholarly Keats–Shelley Review. It also runs the annual Keats–Shelley and Young Romantics Writing Prizes and the Keats–Shelley Fellowship.[190]
