Toni Buzzeo’s first three books in the Guess-the-Job series (Whose Truck?, Whose Tools?, and Whose Boat?) have sold more than 100,000 copies. She is also the author of the 2013 Caldecott Honor Book and New York Times bestseller One Cool Friend, as well as 25 other books for children. Endlessly enthusiastic, Buzzeo draws on her career experiences as an elementary school librarian in crafting her books and speaking with audiences of children in schools and libraries. She lives in Arlington, Massachusetts, in a two-family home where her grandchildren live one flight up.