Columbia subject headings:
Harvard subject headings:
Gettysburg, Battle of, Gettysburg, Pa., 1863.
United States. Army. Iron Brigade (1861-1865)
Princeton subject headings:
Gettysburg, Battle of, Gettysburg, Pa., 1863.
United States--History--Civil War, 1861-1865--Campaigns.
United States--History--Civil War, 1861-1865--Regimental histories.
United States. Army. Wisconsin Infantry Regiment, 6th (1861-1865)