| Clue | Source | Date |
|---|---|---|
| Egg carton specification | Wall Street Journal | 28 Jun 2025 |
| Egg carton spec | New York Times | 02 Aug 2020 |
| Egg designation | Universal | 27 Jul 2019 |
| Egg designation | ||
| Egg-box label | Newsday | 12 Oct 2018 |
| Certain 111-Across specification | ||
| Dairy carton spec | ||
| Egg specification | ||
| Dairy case designation | ||
| Egg carton spec |