This collection chronicles the 1978 Mason-Dixon 500, a NASCAR Winston Cup Series event that took place at the Dover Downs International Speedway in Dover, Delaware, on May 21, 1978. Driving a Mercury, David Pearson finished in first place. Other finishers in the top ten were Cale Yarborough, Lennie Pond, Benny Parsons, Neil Bonnett, Darrell Waltrip, Richard Petty, Bobby Allison, Dick Brooks, and Al Holbert.