Afternoon of the Elves

Afternoon of the Elves is a 1989 adolescent novel by author Janet Taylor Lisle. "Afternoon of the Elves" was a Newbery Medal Honor Book in 1990.
Additional Resources.
http://www.ala.org/alsc/awardsgrants/bookmedia/newberymedal/newberyhonors/newberymedal#90s