![1952 Kurtis Kraft 4000 recalls one of Indy's darkest days - and one of its most controversial drivers | Hemmings 1952 Kurtis Kraft 4000 recalls one of Indy's darkest days - and one of its most controversial drivers | Hemmings](https://assets.rebelmouse.io/media-library/1952-kurtis-kraft-4000-indy-car-chassis-345-photos-courtesy-mecum-auctions.jpg?id=31154768&width=1200&height=800&quality=90&coordinates=77%2C0%2C77%2C0)
1952 Kurtis Kraft 4000 recalls one of Indy's darkest days - and one of its most controversial drivers | Hemmings
![Photo: 1955 Kurtis Kraft KK500D Offy (serial # 371,built in 1954) # 39 Sumar/Chapman Root - Johnny Boyd driver 29th at Indy | Indy Car Roadsters Indianapolis 500 Watson-Kurtis Kraft and others Photo: 1955 Kurtis Kraft KK500D Offy (serial # 371,built in 1954) # 39 Sumar/Chapman Root - Johnny Boyd driver 29th at Indy | Indy Car Roadsters Indianapolis 500 Watson-Kurtis Kraft and others](https://images12.fotki.com/v1681/photos/5/40265/9420476/05zvi-vi.jpg)
Photo: 1955 Kurtis Kraft KK500D Offy (serial # 371,built in 1954) # 39 Sumar/Chapman Root - Johnny Boyd driver 29th at Indy | Indy Car Roadsters Indianapolis 500 Watson-Kurtis Kraft and others
![Johnny Boyd - Kurtis 500G Offenhauser - George Bignotti Racing - International 500 Mile Sweepstakes - 1958 USAC Nat… | Classic racing cars, Indy roadster, Indy cars Johnny Boyd - Kurtis 500G Offenhauser - George Bignotti Racing - International 500 Mile Sweepstakes - 1958 USAC Nat… | Classic racing cars, Indy roadster, Indy cars](https://i.pinimg.com/736x/0f/bb/d0/0fbbd0c6da2361716d0c3af26f189b1e.jpg)
Johnny Boyd - Kurtis 500G Offenhauser - George Bignotti Racing - International 500 Mile Sweepstakes - 1958 USAC Nat… | Classic racing cars, Indy roadster, Indy cars
Sacramento State - From left, junior Brooke Estrada and seniors Kurtis Hofer and Michael Boyd Jr. show their research modeling youth substance use across the high school transition using a linear piecewise
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