Harry Nilsson to Douglas Trumbull in 8 Steps
- Harry Nilsson wrote Thank Heaven for Kathy
- Thank Heaven for Kathy was published by Ridgetop Music
- Ridgetop Music published My Girl
- My Girl was written by Scott Turner
- Scott Turner wrote The Ash Grove
- The Ash Grove was written by Diane Lampert
- Diane Lampert wrote the title song for Silent Running
- Silent Running was directed by Douglas Trumbull