| Clue | Source | Date |
|---|---|---|
| GIs' helmets, in slang | Thomas Joseph | 25 Mar 2024 |
| Starts to take stock after mostly hating cycling helmets | The Telegraph Toughie | 18 Jan 2024 |
| Starts to take stock after mostly hating cycling helmets (3,4) | ||
| Doughboys’ helmets | Wall Street Journal | 23 Oct 2023 |
| Paranoid types, slangily | ||
| Paranoid types, slangily | New York Times | 20 Oct 2019 |
| Paranoid sorts, in slang | New York Times | 25 Mar 2018 |
| Paranoid sorts, in slang | ||
| Soldier's toppers | ||
| GIs' helmets, in slang | ||
| Soldiers' helmets, in slang | ||
| Oil field safety gear | ||
| Soldiers' helmets | ||
| Protective gear | ||
| Protective helmets | ||
| Protective headwear | ||
| Military headgear | ||
| Helmets for G. I.'s. | ||
| Soldiers' coverings |