Hi, Robyn -
It's on a 1956 Smithsonian/Folkways album, Man of the Whole Wide World, by Art Samuels and the Montréal Youth Singers.

ONE WORLD
(Art Samuels)

You may talk of a world that's divided,
You may say that it always must be,
But in millions of hearts there's a yearning,
For a world we may yet live to see…

CHORUS
One world, born of all nations,
One world someday there'll be,
One world, free of oppression,
Waiting for you and for me.

Though I cannot cross all the oceans,
Some lands seem remote as the stars,
There's pleasure enough in just knowing
The hands of friendship reach far.

I dreamed of a great golden river
That flowed into far distant shores,
It melted the boundaries of nations
And made them one evermore.

The shackles of slavery are bursting,
The yoke of oppression must cease,
The birth of a new age is dawning,
Bright with the promise of peace.

Don't ask for a world that is perfect,
For such fervent dreams may not be,
Just help build a world that is better,
Where people can live and be free.