Sally M. Walker is the award-winning author of more than sixty books for children, including the companion books Earth Verse: Haiku from the Ground Up, illustrated by William Grill, and Out of This World: Star-Studded Haiku, illustrated by Matthew Trueman. She is also the author of Underground Fire: Hope, Sacrifice, and Courage in the Cherry Mine Disaster; Sinking the Sultana: A Civil War Story of Imprisonment, Greed, and a Doomed Journey Home; Boundaries: How the Mason-Dixon Line Settled a Family Feud and Divided a Nation; and Champion: The Comeback Tale of the American Chestnut Tree, an Orbis Pictus Honor Book. Sally M. Walker lives in Illinois. Sally M. Walker es la galardonada autora de más de sesenta libros para niños, incluidos los libros complementarios Earth Verse: Haiku from the Ground Up, ilustrado por William Grill, y Out of This World: Star-Studded Haiku, ilustrado por Matthew Trueman. También es autora de Underground Fire: Hope, Sacrifice, and Courage in the Cherry Mine Disaster; Sinking the Sultana: A Civil War Story of Imprisonment, Greed, and a Doomed Journey Home; Boundaries: How the Mason-Dixon Line Settled a Family Feud and Divided a Nation; y Champion: The Comeback Tale of the American Chestnut Tree, un libro de honor de Orbis Pictus. Sally M. Walker vive en Illinois.