Jenny Offill is the author of 17 Things I'm Not Allowed to Do Anymore, a Parenting Magazine Best Book of the Year and a Bank Street College of Education Best Children's Book of the Year, and 11 Experiments That Failed, also a Bank Street College of Education Best Children's Book of the Year, which Kirkus Reviews, in a starred review, called "the most joyful and clever whimsy." She lives in upstate New York. Barry Blitt's illustrations frequently appear on the cover of the New Yorker and have also graced the pages of Vanity Fair, the New York Times, Child magazine, and Entertainment Weekly. He is the illustrator of the children's books George Washington's Birthday: A Mostly True Tale by Margaret McNamara, The Adventures of Mark Twain by Huckleberry Finn by Robert Burleigh, and Once Upon a Time, The End (Asleep in 60 Seconds) by Geoffrey Kloske.