| Answer | Crossword Clue |
|---|---|
| MIRA | Earliest known pulsar |
| SESAMESEEDS | Earliest known spice |
| ARK | Earliest known vessel. |
| ABORIGINE | Earliest known inhabitant |
| MADAMIMADAM | Earliest known greeting |
| SOCRATES | Earliest known quizmaster. |
| SUMERIAN | World's earliest known civilization |
| FELANDER | Earliest-known kangaroo: Var. |
| PEALE | Painter of earliest known portrait of Washington. |
| HSIA | Earliest-known Chinese dynasty (dating back to 2000 B.C.) |
