From: http://www.harpercollins.com/hc/aboutus/imprints/trophy.asp

HarperTrophy: the premier paperback imprint for children.  With a stellar list that includes more Newbery and Caldecott award-winners than any other publisher, Trophy's authors and illustrators are some of the most beloved in children's literature. From picture books by Maurice Sendak and I Can Reads by Arnold Lobel to novels by Laura Ingalls Wilder, E. B. White, Katherine Paterson and Beverly Cleary.  Trophy continues its winning tradition into the next millennium, offering the very best of the old and the new.