Motorcycle hill climb competition in America.
Thought to be Selected Originals from late 1940s material.
California, United States of America (USA).
Hill climbing motorcycle competition in progress. Long shot of a motorcyclist driving up grass hill, he falls and starts running down hill with bike chasing him. Back view, another motorcyclist riding away from camera. Another motorcyclist riding up grass hill. From top of hill, motorcyclist slips and loses hold of the bike. Pan with another motorcyclist approaching hill. Pan, motorcyclist climbing hill, nears top but loses it. Pan, motorcyclist climbing hill, spills and motorbike goes near crowd. Towards and pan, motorcyclist gets to top of hill and bike goes over.
Possibly connected with 48/37 - MD.