Title: Horseshoe Curve
Subjects: History, Pictorial works, Railroads, Railroads, united states, history, Railroads, pictorial works, Pennsylvania, history, Pennsylvania, description and travel, Railroads -- Pennsylvania -- History -- Pictorial works, Horseshoe Curve National Historic Landmark (Pa.) -- History -- Pictorial works
Places: Horseshoe Curve National Historic Landmark (Pa.), Pennsylvania