Just came across this by accident?
http://www.amazon.com/Jonathan-Livingston-Seagull-Complete-Edition/dp/147679331X
This was a favorite of mine in my teenage years, it helped make the world a little less lonely and more lonely than ever before in many ways. It is a story that speaks to the heart.
All in all a beautiful story, undoubtedly many have read this book in the past what makes this different is the Author has released the never before published 4th part to the book.
Ordering mine today, should be fun to visit again after so many years.
A favorite of mine as well. I will check out the 4th part. Thks.
Sey 
Your Welcome Ordered mine Kindle edition but have not made the time to read it yet.