There are a lot of books that discuss Steinitz's theory: Lasker's Manual, Euwe's The Development of Chess Style, and Kotov's Play Like a Grandmaster. Charles Devide and David Hooper put together a book of Selected Games for Dover, and Kurt Landsburger wrote William Steinitz: A Biography of the Bohemian Caeser.
I don't know of any books about Paulsen offhand, but Hooper and Whyld have a short blurb on his impact in the Oxford Companion.
Is there any books that talk about Willhelm games with annotation a book only about him.
The Devide and Hooper book has light annotations of his games in descriptive notation. Kasparov annotated some Steinitz games in My Great Predecessors volume 1. Sid Pickard also put together some of Steinitz's own annotations in a digital collection called The Collected Works of William Steinitz.
So how would you rate The Collected Words of William Steinit as being helpful.
Start using a search engine, Google Books and look for books at eBay and amazon. http://www.cln.org/searching_faqs.html
http://www.monash.com/spidap2.html
I think your major problems here will be books that are OP and/or outrageously expensive, but you'll never know until you start looking. GOOD LUCK!
I went to the book store about a week ago and saw some of the books people recommended. They were either hits or miss. More miss than hit.
The problem is that either the book has 1-2 chapters of what you want, few examples and not going deep into explanations. I hate some of these new books as they are worthless from my view. The books of that past i can pick and read 1-2 chapters and get results immediately.
Is there a good analysis book that talks about the 1st world champion Wilhelm Steinitz or Louis Paulson (this guy espically always liked Paulsons style since it matche's mine.