The Retro Hugos were handed out at the beginning of LonCon 3, this year's World Science Fiction Convention. Awarded for works published in 1938 (which would have been eligible for the Hugo Awards the year of the first World Science Fiction Convention in 1939)
As it turns out, I own two of the best novel nominees, including the winner - T. H. White's The Once and Future King. I think that like my wife, I've never actually finished it, but I'm not sure.
Full aware details here.