The First use of time travel in fiction question resulted in forwards time-travel as the accepted answer. So now I'm wondering about backwards time travel.
This answer from that question, which I would've accepted were it not in that question, is WhatRoughBeast's:
Memoirs of the Twentieth Century by Samuel Madden was published in 1733, and uses the idea that the author is given documents from 200 years in the future. While no person is shown travelling back in time, the documents may count.
So, are there any backwards time travel uses from even earlier than 1733?