Below is a clip from a longer video on the John Bull (in the Smithsonian) run in 1981 for it's 150th Birthday. It ran on the B&O's Georgetown Branch, a single track line that extended from Georgetown Junction, near Silver Spring MD, sight of the fatal 1996 MARC Train/Amtrak crash, to Georgetown in Washington DC. Today, the route is part of the Capital Cresent Trail. Many remnants of the rail line can still be found with ties, rails, B&O Emblems, telegraph poles, and many other odds and ends scattered along the trail.