beachcomber -

have you tried www.musicalheaven.com?

I can give you an approximation, sans two lines that I cannot remember for anything -

On the day I was born, said me father, said he
I've an elegant legacy waitin' for ye
'Tis a rhyme for your lips
& a song for your your heart
To sing it whenever the world falls apart

(cho) Look, look, look to the rainbow
Follow it over the hills and stream
Look, look, look to the rainbow
Follow the fellow who follows a dream

'Twas a wondrous gift to bequeath to a child
Oh, the lure of that song kept her feet runnin' wild
????????????
????????????

(cho)
So I bundled me heart and I roamed the world free
To the east with the lark, to the west with the sea
And I'll search all the earth and I'll scan all the skies
Till I find it at last in me own true love's eyes

(cho)

Maybe this will stimulate someone to remember the missing lines! At any rate, Musical Heaven is a nice site - although it does have commercial links to Amazon - there is a lot of info on musicals.