1. Interview with Katie Buffett.
2. While this story sounds buffed and polished over the years, the tone of it rings true. Letters from Warren at college to his father a couple of years later have the same breeziness.
3. Interview with Stu Erickson.
4. Interview with Don Dedrick.
5. Interview with Bob Dwyer.
6. According to Gray, Buffett also jokingly dreamed up an idea for a magazine called Sex Crimes Illustrated while they were on the train to the Havre de Grace racetrack.
7. Interview with Bill Gray, now Emeritus Professor of Atmospheric Science at Colorado State University and head of the Tropical Meteorology Project.