"I think that I shall never see, a poem lovely as a tree." The poet, Joyce Kilmer understood the beauty of our sturdy environmental companions. Trees is the essential pocket-sized, folding guide to familiar North American trees. This beautifully illustrated guide Identifies over 140 familiar species organized by family. Created and printed in the USA, this guide was updated in 2012 with a new cover design and updated species selection.The quality of our environment - the air, soil and water - depends on trees. Durable and lightweight, this guide is the one to keep with you on your next outdoor adventure.