From Bob Stewart on the Basia2 list:
"For years several of us tried unsuccessfully to determine the correct
lyrics, resulting in several different lyric versions.
So, I decided to contact a co-writer of the lyrics, Joan Beal.
I sent Joan an e-mail containing one of the versions,
and asked her if she would please verify and correct it for us.
Joan very kindly and graciously did exactly that
in a very warm and beautiful e-mail to me.
We should all be very thankful to her."
And we are-- you can find the lyrics here. Great for all of us waiting for spring.