Dang. Like the Civil War or not, that's awesome!!! That someone would go to all the trouble to collect these photos (and I'm assuming other memorabilia, as well) to preserve them and then donate them to an institution that will take care of and preserve them, where they would normally have faded away in some dusty attic or damp basement somewhere...that's just frikkin awesome!
I'm with Mike here....each one of these photos has a story behind it, a life cut short or otherwise forever changed by the events taking place. If only they could talk...of course, I'm also the morbid type who drives past a cemetery and wonders what the stories are of those buried there, what sort of tales they could pass along...