Battles That Changed American History: 100 of the Greatest Victories and Defeats
Landmark Legislation, 1774-2012: Major U.S. Acts and Treaties
Explorers in the 20th and 21st Centuries: From Auguste Piccard to James Cameron
Re-Framers: 170 Eccentric, Visionary, and Patriotic Proposals to Rewrite the U.S. Constitution
Race and Racism in the United States
Scientists and Inventors of the Renaissance
Native American Boarding Schools
Substance Abuse in America: A Documentary and Reference Guide
The Reference Shelf: Arab Spring
First Amendment Rights: An Encyclopedia