| Answer | Crossword Clue |
|---|---|
| KEROSENE | Source of the Rockefeller fortune |
| KEROSENE | Fuel that built the Rockefeller fortune |
| OIL | Source of the Getty fortune |
| OIL | Source of the Clampett fortune |
| OIL | Source of the Ewing fortune |
| OIL | Source of Rockefeller wealth |
| OIL | Source of Rockefeller money |
