Which of these books is considered the first prose pornography in the history of literature ?

Memoirs of a Woman of Pleasure;" Fanny Hill", is an erotic novel by English novelist John Cleland first published in London in 1748. Written while the author was in debtors' prison in London, it is considered "the first original English prose pornography, and the first pornography to use the form of the novel". It is one of the most prosecuted and banned books in history.