Twitter feed for the online edition of the Encyclopedia of Science Fiction, principal editors John Clute and David Langford.
The SFE has a short entry on Robert Payne: https://t.co/hq7Ih4KERN, explaining The Deluge "pretends to be based on notes left by Leonardo da Vinci ... in which an ancient City is drowned by a vast flood resulting from the prophesied collapse of a mountain in Armenia". https://t.co/mw9xmoTeL3