The Good-Bye Book by Judith Viorst
I'm Worried by Michael Ian Black
Is a Worry Worrying You? by Ferida Wolff and Harriet May Savitz
Owl Babies by Martin Waddell
Perfectly Norman by Tom Percival
The Watermelon Seed by Greg Pizzoli
Wemberly Worried by Kevin Henkes
What Do You Do With a Problem? by Kobi Yamada
Wilma Jean the Worry Machine by Julia Cook
Worried Arthur by Joan Stimson