| Answer | Crossword Clue |
|---|---|
| EXXONMOBIL | Descendant of Standard Oil |
| EXXONMOBIL | Standard Oil descendant |
| AMOCO | Standard Oil of Indiana |
| ESSO | Subsidiary of Standard Oil, once |
| AMOCO | Former Standard Oil of Indiana |
| ESSO | Standard Oil of New Jersey, formerly |
| ESSO | Standard Oil of New Jersey, once |
| TARBELL | "History of the Standard Oil Company" author |
| AMOCO | It started as Standard Oil of Indiana |
| AMOCO | It began as Standard Oil of Indiana |
| IDATARBELL | "The History of the Standard Oil Company" journalist |
| AMOCO | Brand that evolved from Standard Oil of Indiana |
| IDATARBELL | Exposer of Standard Oil during the Progressive era |
| IDATARBELL | "The History of the Standard Oil Company" author |
