Attorney John H. Clarke, grand jury witness Patrick Knowlton, and researcher Hugh Turley co-authored the final twenty pages of Ken Starr's Report on the Death of Vincent W. Foster, Jr. Proof of the FBI and OIC cover-up was published in a 538 page book Failure of the Public Trust (2006 ed.) available to download here.
http://fbicover-up.com/ewExternalFiles/BOOK.pdf
Corresponding exhibits of documents to footnotes in the book are available here.
http://fbicover-up.com/ewExternalFiles/exhibits.pdf