16 USC § 430h-8
Park interpretation
through Pub. L. 116-344, except Pub. Ls. 116-260 and 116-283
In administering Vicksburg National Military Park, the Secretary shall interpret the campaign and siege of Vicksburg from April 1862 to July 4, 1863, and the history of Vicksburg under Union occupation during the Civil War and Reconstruction.