Presidential Power: Documents Decoded
Military Technology: Top Secret Clearance: Military Jets Up Close
Encyclopedia of Historical Warrior Peoples & Modern Fighting Groups
Campaigning for President in America, 1788-2016
Homeland Security Technologies for the 21st Century
Military Technology: Top Secret Clearance: Warplanes of World War II Up Close
The Roots and Consequences of 20th-Century Warfare: Conflicts That Shaped the Modern World
The CQ Press Guide to U.S. Elections
Military Technology: Top Secret Clearance: Small Arms Up Close
Economics in the 21st Century: Taxes: What They Are and How They Work
Illegal Immigration: A Reference Handbook
Instruments of War: Weapons and Technologies That Have Changed History
The Central Intelligence Agency: An Encyclopedia of Covert Ops, Intelligence Gathering, and Spies
Government and the Economy: An Encyclopedia
Governments around the World: From Democracies to Theocracies
9/11 and the War on Terror: A Documentary and Reference Guide