| Clue | Source | Date |
|---|---|---|
| CIO partner, informally | Newsday | 21 May 2019 |
| CIO partner, familiarly | The Washington Post | 17 Feb 2019 |
| CIO partner, familiarly | LA Times Daily | 17 Feb 2019 |
| CIO partner, familiarly | ||
| 1955 merger partner, familiarly | ||
| Union founded by Samuel Gompers, for short | ||
| Union founded by Samuel Gompers, for short | ||
| Union founded in 1886, for short | ||
| Samuel Gompers's org., informally | ||
| Union, familiarly | ||
| Org. that merged with the CIO | ||
| Labor group, for short | ||
| Samuel Gompers group, in brief |