| Episode |
Sierra Club Chronicles 9/11 Forgotten Heroes |
1970 |
| Episode |
Sierra Club Chronicles The Day The Water Died |
1970 |
| Episode |
Sierra Club Chronicles Dioxin, Duplicity & Dupont |
1970 |
| Episode |
Sierra Club Chronicles Range Wars Rage On |
1970 |
| Episode |
Sierra Club Chronicles Breathless in L.A. |
1970 |
| Episode |
Sierra Club Chronicles Storm In The Gulf |
1970 |