Somebody approached Dylan at a party with a lyric for a new song. Dylan looked at the words:
The river flows
It flows to the sea
Wherever that river goes
That's where I want to be
Dylan then gave the guy the note back and said: "Give it to McQuinn, he can do something with it."
The song became "The Ballad of Easy Rider"
The other Byrd not mentioned was Gene Clark, who wrote many of the early songs which were not covers.
What a cool story... and great to meet him, seems like a good guy.