A friend at work loaned me the book that I am reading now. A Geologic Trip Across Tennessee by Interstate 40 by Harry L. Moore. This is part of the Outdoor Tennessee Series. This book appears to still be available and if you are a travel, outdoor, hiking, geology, or history buff in the southeast, you might enjoy this book. I happen to like geology and hiking. While I am not fond of driving, I like to know the trerrain I am driving through. If you are travelling through Tennessee and looking out the window, this book will give you a good idea of things to watch for in the landscape and as you look at the ground underneath you.