Another legend from Maryland, specifically Frederick County, where I grew up---the dread Snallygaster, which terrorized Middletown Valley. It would swoop down and carry off disobedient children. In the 1930s, the Middletown newspaper reported that as it flew over a still in some local woods, the Snallygaster was overcome by the fumes, fell into a moonshine vat and drowned. But legend says it left some eggs behind, which may have hatched ...
There is also a hill in Frederick County where, if you stop your car and put it in neutral, the car will roll uphill. The story goes that it's Civil War soldiers pushing the car up the hill as if it were a heavy artillery piece.
There are SO many ghostly legends in Frederick County that there are a couple books out about them. The area is very rich in Revolutionary and Civil War history.