Shelby Foote can be heard on one of the YouTube 50th anniversary videos. There was also an 75th anniversary meeting in 1938. But I’m sure you’re aware of all that.
many moons ago we saw shelby foote speak (3rd row from the stage). the line i always remember was him talking about the influence of the war. “before 1861 the United States WERE, after 1865 the United States IS.”