From a Classic Driver Magazine online article:
During this year’s Monterey Car Week, all four of Bugatti’s hallowed Type 59s were reunited for the first time since 1935. We spoke to the man who pulled off arguably the most historically significant automotive rendezvous of the decade…
In the fabled legend of Bugatti’s racing cars, there is one model that is so beautiful and so elusive that is stands at the top of every enthusiast of the great French marque’s wish list: the Type 59. Along with the input of Jean Bugatti, who had been one of the 
driving forces behind the introduction of the twin-cam engine, Ettore Bugatti created the ultimate expression of his jewel-like Grand Prix car.
Boomers Daily 