Scope and Contents At the fairgrounds at Sacramento, the professional riders are split into four heats with the 20 fastest riders making the final. Dave Aldena, Mark Brailsford, Dick Mann, Dallas Baker, Lloyd Houtchet, Jim Rice, and Rusty Koppich are listed as participants, with Aldena and Mann fighting for the lead. Aldena manages to hold off Mann at the end, winning the race. The next scene is shot at Daytona, where in 1967 Yamaha has the top five finishers. In 1968, Yamaha has the top four...