I've got the words for you:

AT THE RAINBOW'S END
(Bob Nolan)

I've traveled this whole world over,
And now I'm going down to the rainbow's end.
From twilight till dawn a-trudgin' on and on
Till I come to the rainbow's end.

I'm weary and tired, but I don't care.
I'm going down to the rainbow's end.
I have no friends, no home, just a-trav'lin' alone
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'll find will bring me real peace 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 we meet at the rainbow's end.

The song was written about 1936 By Bob Nolan (a Canadian!), one of the founding members of the Sons of the Pioneers. This song was included in the album "The Sons of the Pioneers sing the songs of Bob Nolan"

I got the words (and music) from the Readers Digest Songbook of Canadian Songs and composers. If you need the music, let me know.