Kate Feiffer is a writer, a filmmaker, and a mother. She is the author of the picture books No Go Sleep!; President Pennybaker; But I Wanted a Baby Brother!; The Wild, Wild Inside; Which Puppy?; My Mom Is Trying to Ruin My Life; and Double Pink; and of the middle-grade novels Signed by Zelda and The Problem with the Puddles. She lives with her family on Martha's Vineyard, Massachusetts. Visit her at KateFeiffer.com. Jules Feiffer has won a number of prizes for his cartoons, plays, and screenplays, including the Pulitzer Prize for editorial cartooning. Among the books he's illustrated for children are The Phantom Tollbooth, Some Things Are Scary, and in collaboration with his daughter Kate, Henry the Dog with No Tail, and No Go Sleep. He is the author and illustrator of Bark, George, I Lost My Bear, Meanwhile, and The Man in the Ceiling.