These are some books that I have personally enjoyedk that are in the public domain. They are produced and distributed by Project Gutenberg.
I've read all of these as physical copies, some in the original language (when English), others as Finnish translations. I can't vouch for the production or translation quality of these copies.
I plan to expand the library with new works and brief reviews. I also wish to see similar libraries by other people. Finding good books on Project Gutenberg is quite difficult if you don't know what to search for.
Carroll, Lewis: Alice’s Adventures in Wonderland
Chesterton, G.K.: The Man Who Was Thursday
Verne, Jules: Around the World in 80 Days
Verne, Jules: A Journey to the Centre of the Earth