This June marks the 200th anniversary of the declaration of the War of 1812. The “House Declaration of War” of June 4, 1812 is undergoing conservation treatment. The Congrpreviously laminated document was treated to remove cellulose acetate. After delamination, a conservator repaired tears and filled losses. This ‘during treatment’ photo shows a new paper insert being fitted to fill a loss. Visit the U. S. Capitol Visitors’ Center fall exhibition to see the completed document on display.