| Answer | Crossword Clue |
|---|---|
| TRACEDTO | Found as the source |
| TRACED | Found the source of, as a phone call |
| SUN | Daylight source found in the seven longest Across answers |
| INFERNO | Source of the line "Midway upon the road of our life I found myself within a dark wood ..." |
| OPENEYE | Symbol of watchfulness, as found on the Great Seal |
| NILE | David Livingstone found its source |
| ORINOCO | So. Amer. river whose source has recently been found. |
