If you enjoy that book, I have found the book that Richthofen wrote himself at The war time journals. He wrote the book in 1917, I printed it on paper to read it better. It is an autobiograghy of his career both in the air and in the trenches. It is called Der Rote Kampfflieger, It is an excellent book. he describes his first flight as well as his battle with Major Hawker.
WWW.richthofen.com/index.html