"The animated map above shows how Union and Confederate markers ac ulated over time and where. It also allows you to compare and contrast the language with which the two sections valorized their respective causes. As time progresses, monuments dot the map,
accelerating at certain historical moments (around the Civil War centennial celebration, for example, which started in 1957).* The animation also highlights striking inscriptions from Union and Confederate markers. (Note: The interactive is designed so that you can watch it multiple times and see different inscriptions.)"
http://www.slate.com/articles/news_a...nion_ones.html
Also, you can listen to this expert starting at 1:00
But, SPLC.