| Answer | Crossword Clue |
|---|---|
| PONYEXPRESS | 19th-century mail system |
| PONYEXPRESS | 19th-century mail transport |
| PONYEXPRESS | 19th-century mail delivery service |
| CERES | Body in our solar system that was considered a planet in the first half of the 19th century |
| chaises | four-wheeled coach for rapid transportation of passengers and mail, used in the 18th and early 19th centuries |
| chaise | four-wheeled coach for rapid transportation of passengers and mail, used in the 18th and early 19th centuries |
