日記ではないが‥、
A collection of original manuscripts letters & books of Oscar Wilde including his letters written to Robert Ross from Reading Gaol and unpublished letters poems & plays formerly in the possession of Robert Ross, C. S. Millard (Stuart Mason) and the younger son of Oscar Wilde (1920)
https://archive.org/details/collectionoforig00adulrich
Oscar Wilde love letters discovered
A collection of affectionate letters written by Oscar Wilde to a young male magazine editor have been revealed for the first time.
http://www.telegraph.co.uk/news/uknews/8004271/Oscar-Wilde-love-letters-discovered.html