This authentic Indy Car Watson roadster blueprint was reverse engineered by my grandfather, Jack Layton, a master restorer of vintage race cars. Jack knew A.J. Watson personally and noted during his restoration job on the 1958 Trevis/Watson "McNamara Special" that no blueprints existed for any of Watson's original creations - they were born exclusively from chalk marks on his garage floor. To remedy this, he had these blueprints drawn up by contacts of his at the GM proving grounds to preserve and document the engineering genius of racing pioneer A.J. Watson. Please feel free to message me with questions, this is a rare and unique piece of auto racing history!