Question: In which year did the artist, who illustrated "Multiverse: Exploring Poul Anderson's Worlds" win the Chesley Award for Artistic Achievement?
Sentence (from "Multiverse: Exploring Poul Anderson's Worlds"): All but one of the pieces are original to the anthology; the remaining one, Tad Williams's "Three Lilies and Three Leopards (And a Participation Ribbon in Science)", was originally published in the Winter 2012 issue of the ejournal "Subterreanean Online".
Relevant evidence: No