Sources of Presidential Signing Statements
Explanation - Federal Legislative History page
Hein Online (available on CSU campus or network)
U.S. Presidential Library - includes several titles containing signing statements:
Public Papers of the Presidents of the United States , published by the Government Printing Office (GPO) covering from Herbert Hoover through George W.Bush.
Weekly Compilation of Presidential Documents , published by the GPO covering v.1 (1965) - v.42 (2006).
Weekly Compilation of Presidential Documents , published by the GPO covering v.1 (1965) - v.42 (2006).
Public Papers of the Presidents of the United States , published by the Government Printing Office (GPO) covering from Herbert Hoover through George W.Bush.
The Ohio State University's Moritz Legal Information Blog
Presidential Signing Statements post containing links to sources, a working definition and a link to Vox Bibliothecae from the University of Dayton, Zimmerman Law Library providing links to articles on the topic.
Schuyler M. Cook , Govt. Info./Reference Librarian, June 21, 2006