| Clue | Source | Date |
|---|---|---|
| Mention North American approaching East European by radio | ||
| Mention publicly, often in tribute | ||
| Public listing of people to be acknowledged (9) | ||
| Public mention | Newsday | 02 Nov 2019 |
| Personally mention East European when reporting by war zone | The Telegraph Toughie | 21 Aug 2015 |
| Mention of a mechanical piece in the isthmus |