Dylan:
Blowin' In The Wind

Lehrer:
So Long Mom, I'm Off To Drop The Bomb
We Will All Go Together When We Go

The following appears on a bicentennial recording from my New England Town s'posedly from the American Revolutionary Era, sounds more Irish than anything else:

When I was young I used to be
As fine a lad as ever you'd see
The Prince O' Wales he says to me
"Come join the British Army!"
Toora loora loora loo
They're lookin' for monkeys up in the zoo
And if I had a face like you
I'd join the British Army!