| Answer | Crossword Clue |
|---|---|
| NAPIER | John who invented logarithms |
| NAPIER | Mathematician John who invented logarithms |
| NAPIER | Mathematician John who discovered logarithms |
| DEERE | John who invented a steel plow |
| DEERE | John who invented the steel plow |
| PISTOL | John Moses Browning invented an automatic one |
