Well, I found it in the Bill Staines songbook titled If I Were a Word, Then I'd Be a Song, published in 1980 by Folk-Legacy records. I guess we can call this the "definitive" transcription.

ALL OF ME
(Bill Staines)

Knowing you is oh, so lovely.
Knowing you is oh, so fine.
Even on a cold grey morning,
We can see the sunlight shine.

Loving you is oh, so simple.
Loving you is oh, so fine.
Even on a cold grey morning,
We can see the sunlight shine.

All the heavens know I love you,
Simply 'cause I told them so.
All the horses in the valley,
All the stars, and all the stones.

     All the flowers in the meadows,
     All the waves in all the seas.
     All the mountains standing silent
     Far above the golden trees.

     So I'll sing my feelings to you,
     Lay them down in simple rhyme:
     All of me remains here with you,
     All I am for all of time.

Loving you is oh, so simple.
Loving you is oh, so fine.
Even on a cold grey morning,
We can see the sunlight shine.