| Clue | Source | Date |
|---|---|---|
| Cop-Tur and Cy-Kill, in a 1980s toy line | Wall Street Journal | 19 Aug 2023 |
| Predecessors of Transformers | New York Times | 16 Feb 2019 |
| Predecessors of Transformers | ||
| '80s toy fad | ||
| Transforming Tonka toys | ||
| Transforming Tonka toys of the 1980s | ||
| Popular Tonka toys | ||
| Popular Tonka toys |