Scroll down through The Locus Awards 2016 to check it out on line, but just quickly, here was the short list. Just check the competition Letters beat.
to Tiptree, Alisa
Krasnostein & Alexandra Pierce, eds. (Twelfth Planet)
- The Culture Series of Iain M. Banks, Simone Caroti (McFarland)
- Lois McMaster Bujold, Edward James (University of Illinois Press)
- Frederik Pohl, Michael R. Page (University of Illinois Press)
Bradbury, David Seed (University of Illinois Press)