World History Maps Interactive Historical Atlas of the Civil War, detail page for:

Pennsylvania, State before Nov 6, 1860 - after Jun 25, 1865

William F. Packer US Governor, before Nov 6, 1860 - Jan 15, 1861

Pennsylvania election results: Lincoln 268030 56.3%, Douglas 16765 3.5%, Bell 12776 2.7%, Breckinridge 178871 37.5%, Nov 6, 1860

Andrew G. Curtin US Governor, Jan 15, 1861 - after Jun 25, 1865
Pennsylvania and Delaware transferred from US Dept. of the East to Dept. of Washington, Apr 19, 1861
US Dept. of Pennsylvania created Pennsylvania Delaware and parts of Maryland transferred from Dept. of Washington, Apr 27, 1861
Western Pennsylvania transferred from US Dept. of Pennsylvania to Dept. of The Ohio, May 9, 1861
Western Pennsylvania transferred from US Dept. of The Ohio to Dept. of Pennsylvania, Jul 25, 1861
US Dept. of The Potomac created Delaware and Maryland transferred from Dept. of Pennsylvania parts of Virginia included Dept. of Pennsylvania discontinued Depts. Of Washington Northeastern Virginia and Shenandoah discontinued absorbed by Dept. of the Potomac, Aug 17, 1861

New Jersey and Pennsylvania added to Dept. of The Potomac, Feb 1, 1862
US Middle Dept. created Pennsylvania New Jersey Delaware and eastern Maryland transferred from Dept. of the Potomac, Mar 22, 1862

Gettysburg Campaign, Jun 3, 1863 - Aug 1, 1863
US Dept. of The Monongahela created western Pennsylvania transferred from Middle Dept., Jun 9, 1863
US Dept. of The Susquehanna created eastern Pennsylvania transferred from Middle Dept., Jun 9, 1863
Hanover, Battle, Jun 30, 1863
Gettysburg, battle, Jul 1, 1863 - Jul 3, 1863

US Dept. of The Monongahela discontinued and merged into Dept. of the Susquehanna, Apr 6, 1864
Pennsylvania election results: Lincoln 296292 51.6%, McClellan 277443 48.4%, Nov 8, 1864
US Dept. of The Susquehanna renamed to Dept. of Pennsylvania, Dec 1, 1864