#OTD in 1863.
Jules Verne's novel Five Weeks in a Balloon, or, Journeys and Discoveries in Africa by Three Englishmen (Cinq semaines en ballon) is published in Paris. It will be the first of Verne's Voyages Extraordinaires. This was Verne's first novel to be published by Pierre-Jules Hetzel, following the rejection of Voyage en Angleterre et en Écosse.
https://en.wikipedia.org/wiki/Five_Weeks_in_a_Balloon
Five Weeks in a Balloon at PG:
https://gutenberg.org/ebooks/3526
https://gutenberg.org/ebooks/4548