The complete list of winners is:

Biography: “Napoleon: A Life” by Andrew Roberts

Art Seidenbaum Award for First Fiction: “Faces in the Crowd” by Valeria Luiselli

Graphic Novel/Comics: “The Love Bunglers” by Jaime Hernandez

History: “The Deluge: The Great War, America and the Remaking of the Global Order, 1916-1931” by Adam Tooze

Mystery/Thriller: “Dry Bones in the Valley” by Tom Bouman

Poetry: “Citizen: An American Lyric” by Claudia Rankine

Science and Technology: “The Sixth Extinction: An Unnatural History” by Elizabeth Kolbert

Young Adult Literature: “The Family Romanov: Murder, Rebellion, and the Fall of Imperial Russia” by Candace Fleming

more here: http://www.latimes.com/books/jacketcopy/la-et-jc-book-prizes-20150418-story.html