The following is
not a nomination (I don't expect to be able to participate at the moment), just some thoughts I had when I saw the topic:
I had recently noticed some books by Australian author Ion L. Idriess had been appearing as ebooks. At least three of his works would fit this topic quite well, but only one has made it into ebook so far. I mention all three books because they are based on true incidents that (I think) are interesting in their own right.
*
Isles Of Despair is about
Barbara Thompson being shipwrecked in the Torres Strait in 1844.
*
Drums of Mer is about two young boys that survived the wreck of the
Charles Eaton off the coast of Northern Queensland in 1834.
*
Head-Hunters of the Coral Sea is the same story as
Drums of Mer but retold in a manner suitable for younger readers (by 1940 standards, anyway).
Drums of Mer is the only one that has made it into
ebook on Kobo that I have seen so far. It's also the only one I haven't actually read. Idriess's comments,
noted on Wikipedia, about the book are amusing.