| JEFFERSONCITY | Capital of Missouri, named after the third US President (9,4) |
| THOMAS | The Library of Congress's first online database, named for the third US president (6) |
| URANIUM | A radioactive, silvery metal named after the third largest planet in our solar system (7) |
| TWAIN | Mark ___, U.S. writer who has a forest in Missouri named after him (5) |
| THOMASJEFFERSON | The 3rd US President never used capital letters in his handwriting, and died 50 years to the day after declaring independence |
| SEP | Mo. named after the number seven |
| NOV | Mo. named after the number nine |
| AARONBURR | The third US vice-president, who killed his political rival Alexander Hamilton in a duel (5,4) |
| AUG | Mo. named after a Roman emperor (3) |
| JEFFERSON | Third US president, whose library is located in Charlottesville, Virginia |
| FOURTHESTATE | The role of the press could be next after the third scheme (6,6) |
| CITY | Jefferson ___ (capital of Missouri) |
| STCHARLES | Former capital of Missouri |
| BURR | Aaron ___, third US vice-president, who killed Alexander Hamilton in a duel (4) |
| LEVELS | Makes flat 50 finally available to golfer after the third of November |
| BOTHER | After the third of February, different annoyance (6) |
| FOURTH | The one after the third (6) |
| GIVE | After the third of August, I have flexibility (4) |
| GRUFF | After the third of August sounding coarse and surly |
| JAN | Mo. named for the Roman god of doorways |
