| Clue | Source | Date |
|---|---|---|
| Magnate ___ Pickens | New York Times | 12 Jun 2018 |
| Magnate ___ Pickens | ||
| Business magnate Pickens | Wall Street Journal | 09 Oct 2017 |
| Pickens who's a 33-Down | New York Times | 21 Apr 2016 |
| Billionaire Pickens | ||
| "The First Billion is the Hardest" author Pickens | ||
| "The First Billion is the Hardest" author Pickens | ||
| Oilman _____ Pickens |