Kind of shocked epub books by Arthur Conan Doyle, like Sherlock Holmes' adventures, have been downloaded so little from Project Gutenberg: they are, after all, out of copyright. Like, are such electronic books being bought from a shop instead of merely downloading them?
https://gutenberg.org/ebooks/search/?query=Arthur+Conan+Doyle&submit_search=Go%21
@albertcardona the most downloaded book is Simple Sabotage Field Manual by United States.
I think it's just reflecting people's priorities.