New book explores life of legendary Mammoth Cave guide and slave Stephen Bishop BOWLING GREEN, KY (wkyu) - A man who has spent much of life exploring and writing about caves has written a new book about the life of Mammoth Cave guide Steven Bishop. It's a unique book, written from the perspective of Bishop's wife, who--like her husband--was a slave. Dan Modlin spoke with author Roger Brucker. © Copyright 2009, wkyu