Are there any illegal books? titles?

I heard about an ex NSA agent who published a book about his life there...and the book was removed wherever it was found because that agency is ultra top secret and almost anything written about it is supposed to be classified and kept away from the general population. Maybe it is just an Urban Legend, but that's what I heard.

Yes.
In May of 2008, Karen Fletcher, writing under the penname “Red Rose”, was prosecuted by US attorney Mary Beth Buchanan, and was found guilty of writing and possessing obscenity by US District Judge Joy Flowers Conti, for typing several text-only horror stories and posting them on her personal website
All of her stories are illegal to own.

In May of 2009, Chrisopher Handley, an avid Manga collector in Iowa, was prosecuted by Assistant US attorney Craig Peyton Gaumer and Elizabeth M. Yusi, and was found guilty of possession of obscenity by District Judge James E. Gritzner for buying a book containing drawings by Henmaru Machino from Icarus Publishing. The package containing the book was deemed suspicious at the post office because it came from Icarus Publishing.
All drawings, paintings, and manga created by Henmaru Machino are illegal to own.

Drawing, painting, or writing about something is thinking about it, and is the same as doing it in real life! (“Adultery of the mind” - Matt. 5:27-28). Looking at nude paintings can turn you into a rapist as easily as violent video games can turn your child into a killer!
Federal law Title 18, United States Code, Section 1466A(b)(1) has finally put moral restrictions upon drawings, paintings, and sculptures.
It is our duty as servants of God and as upholders of justice to destroy and report all offensive art!
Inspiration must be censored! God’s will be done! Praise Jesus!