About The Editors of Maple Tree Press Books by The Editors of Maple Tree Press Smart-opedia Junior The Amazing Book About Everything by (author) The Editors of Maple Tree Press Ages 5 to 8 Grades k to 3 Smart-opedia The Amazing Book About Everything by (author) The Editors of Maple Tree Press translated by Eve Drobot Ages 8 to 12 Grades 3 to 6