Throughways: Walking, Riding, Floating and Driving

Features that organized, connected and divided communities in the region:

• Navigation on the Potomac: Boats, Ferries and Portages
• The Great Wagon Road
• Mason-Dixon Mile and Crown Stones #90-106 (by 1767)
• "The Bank Road" and the National Road
• Bridges over the Antietam Creek
• The Chesapeake and Ohio Canal
• The Western Maryland Railway
• The Appalachian Trail
• Trolley Power: the Hagerstown and Frederick Railway
• Kreider-Reisner and Fairchild