The Constitution of the United States of America: Analysis and Interpretation, 2008 Supplement, Analysis of Cases Decided by the Supreme Court of the United States to June 26, 2008
United States Code 2006, Supplement 4, V. 6, Title 42, The Public Health and Welfare, Sections 6201-End, to Title 51, National and Commercial Space Programs, January 4, 2007 to January 7, 2011
Nomination and Election of the President and Vice President of the United States 2008, Including the Manner of Selecting Delegates to National Party Conventions