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'A national treasure': conservators work to clean, preserve historic Gettysburg cycloramaCaring for a historic painting that is 142 years old, 12 tons in weight, four stories tall, and longer than a football field is no easy feat.
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Work being done to preserve important Civil War paintingWork is being done to preserve an important part of Civil War history. Sign up for our Newsletters The Gettysburg Cyclorama, ...
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