Mercer Mayer 1987
East of the Sun and West of the Moon is one such story. Like Gerda from The Snow Queen, a young maiden must travel a dangerous journey, searching for the kingdom that is East of the Sun and West of the Moon. There she must save a prince who has been imprisoned by an evil troll princess. It's refreshing to read of a beautiful maiden rescuing a helpless prince for once! And Mercer Mayer's pictures are gorgeous.