| Clue | Source | Date |
|---|---|---|
| Standards of surveyor's reference (10) | ||
| Measures against reserve currency (10) | ||
| Standards of excellence | Newsday | 22 Jan 2017 |
| Sit McGwire and Teixeira? | Wall Street Journal | 06 Jul 2016 |
| Standards | ||
| Reference points. | ||
| Points of reference, for surveyors. |