Yes, as mentioned Winners are Driven by Bobby Unser. The Unbelievable Unsers is another, I recently purchased a used book titled The Bobby Unser Story by Joe Scalzo. There may be more books about the Unsers out there, check Amazon. I'm going to start looking for that Checkered Past book soon. I cheered for all of the Unsers back in the day, hope to visit their museum someday.