Edwin C. Bearss was a world-renowned military historian, author, preservationist, and tour guide best known for his work on the Civil War. The grievously wounded World War II Marine served as the Chief Historian for both Vicksburg National Military Park and the National Park Service, authored dozens of books and articles, and led scores of tours each year. Ed helped discover and raise the Union gunboat USS Cairo from the Yazoo River, now on display at Vicksburg National Military Park. Ed passed away at the age of 97.