Mercury Mini-Bike Clutch Race

Boys and teenagers wearing oversized racing helmets, seated on numbered Honda minibike motorcycles, waiting for Mercury Mini-Bike clutch race to begin / boy walking along dirt path, removing helmet / shirtless, tanned, skinny man with long sideburns and thick black rim glasses talking with boy wearing white racing helmet, seated on minibike, pre-race / boy seated on minibike at starting line, revving engine / boy wearing oversized red racing helmet, adult-sized black leather jacket with racing stripes; boy fiddles with visor, then buckles chin strap; burly man with beard, straw hat, white t-shirt and green pants stands beside him, lifts the visor / Robert Friese on minibike, boys on bikes atop hill. Mercury Mini-Bike Clutch Race on August 11, 1970 in California (Footage by Getty Images)