Title: Summer thunder
Subjects: Gettysburg, Battle of, Gettysburg, Pa., 1863, Artillery operations, Tours, History, Gettysburg, battle of, gettysburg, pa., 1863, United states, history, civil war, 1861-1865, National parks and reserves, united states
Places: United States, Gettysburg National Military Park (Pa.)
Time periods: Civil War, 1861-1865