Here is A version...
AT THE RAINBOW'S END

I've traveled this whole over and now
I'm goin' down to the Rainbow's End
No friends, no home, I'm just a-travellin' alone
On my way to the Rainbow's End.

I'm weary and tired but I don't care
I'm goin' down to the Rainbow's End
From twilight til dawn a-trudgin' on and on
On my way to the Rainbow's End.

They say there are treasures of silver and gold
That's buried down by the Rainbow's End
But the treasure I find, will bring me real piece of mind
When I come to the Rainbow's End.

For someone has waited there all alone
So I will know at the Rainbow's End
How it feels to be pressed to an angel's breast
When I come to the Rainbow's End.

SOURCE:
HANK THOMPSON and HIS BRAZOS VALLEY BOYS
SIMPLE SIMON, SIMPLE HEART
Capitol/Pickwick PTP-2024