| Clue | Source | Date |
|---|---|---|
| Backdrop for moonwalks | Newsday | 18 Jul 2020 |
| 1969-74, politically | Universal | 05 Jul 2019 |
| Period when the EPA was founded | Universal | 05 Jun 2019 |
| 1969-74, politically | ||
| Period when the EPA was founded | ||
| 1969-74, politically | New York Times | 17 Apr 2018 |
| The early '70s | Newsday | 16 Mar 2018 |
| 1969-74, politically | ||
| When the EPA was created | Newsday | 19 Sep 2015 |
| When the EPA was created | ||
| Late '60s and early '70s, politically | ||
| When William Safire worked at the White House | ||
| When the EPA was launched |