Gainesville-born Calvin Mangum was so big and strong for his age that as a young teenager he passed off as a man and got a job at a beer distributor in West Palm Beach, Fla., where he was living in the mid-1960s. “I left home when I was 13,” Mangum said. “I lived 52 years in Florida working driving tractor-trailers. I was making good money. I bought a house at West Riviera Beach for $31,000 cash.”