Strictly speaking, evidence of the author's permission would be needed. It is not entirely favoured for stories to be already existing works from established authors elsewhere though.

They must meet the site's Quality Standards and avoid any Blacklisted Subjects as well.

Copyrighted works should not and will not be posted on this site. The described works, while classics, almost certainly will not be approved to be posted on a site that would fundamentally change their copyrights.