https://standardebooks.org/ebooks/edgar-allan-poe/short-fict...
Biggest so far (and biggest on SE at 1.2m words) has been Samuel Pepys’ Diary: https://standardebooks.org/ebooks/samuel-pepys/the-diary
That book is more than 2600 pages! How long did that take?
https://archive.org/details/diaryofsamuelpep01pepy/page/228/...
Typically, Standard Ebooks will try to avoid OCR unless it’s something that’s missing from Gutenberg.
(If you started some sort of AMA here I'm sure it would be successful.)
Are there any plans to support non-English ebooks as well?
Edit: Regarding non-English ebooks, I was thinking about books like "Der Vogelflug als Grundlage der Fliegekunst" (Birdflight As The Basis Of Aviation) by Otto Lilienthal (https://www.gutenberg.org/ebooks/54565). It's a fantastic book with nice hand-drawn illustrations, and it would deserve being presented/typeset in a beautiful way. Currently available ebooks are mostly bad.
For those who loved the Andrew Lang rainbow-color fairy tale books, Lang also published a volume of The Arabian Nights, not a translation but a recounting of selected tales. I encountered the Richard Burton commodious 3-volume set as a child. It's amazing that nobody at the time thought to proctor my reading choice, given the racism, misogyny, salaciousness, naughty illustrations, everything delivered in such a matter-of-fact tone and just laid out there. To read it cover-to-cover is actually not terribly fun. There's lots of little folk tale snippets, fables, poetry, and Burton footnoted the hell out of everything.
That's work that really needs to be done by a fluent, literate user of that language, hopefully with background in that language's literature and experience in copyediting, and familiarity with publishing. It's not really work you can demand of someone who did a good job (I assume) of it in English; they won't do a good job of it in another language without deep experience in that language. Developing and publishing the works in the language also needs to be done by people fluent in the language.
The example of the English version can be a guide for other languages, and there's of course room for collaboration on software between languages, but asking the English language project to expand to other languages is unlikely to get good results unless the developers also are fluent in those languages.
We're actually looking for Spanish-speaking collaborators: