Gettysburg, Then & Now by William A. Frassanito (1996, Paperback, Illustrated)

This is a very worthwhile booklet. Although it does not treat the subject in depth, it provides the reader with "Then" and "Now" photographs along with explanations of the major points of interest at the famous battlefield. Many of the photos are nearly the same. Others show dramatic changes that have occurred since the mid 1860s. I can recommend this booklet to anyone -historian or novice - who has interest in the Civil War.