John Bunyan (1628–88) was an English preacher and writer who wrote over sixty books and tracts. Bunyan was a Reformed Baptist, and his religious beliefs led to his persecution during the Restoration. While imprisoned Bunyan wrote the spiritual allegory, The Pilgrim’s Progress, which quickly became one of the foundational texts of Protestant thought.

Mike Wimmer has illustrated many books for children, including Home Run: The Story of Babe Ruth by Robert Burleigh, which was named an ALA Notable Children's Book and was called a “grand slam” in a starred review in Publishers Weekly. He also illustrated Flight: The Journey of Charles Lindbergh by Robert Burleigh, which received the Orbis Pictus Award for nonfiction. He lives in Georgia with his family.