Explorers in the 20th and 21st Centuries: From Auguste Piccard to James Cameron
Battles That Changed American History: 100 of the Greatest Victories and Defeats
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
First Amendment Rights: An Encyclopedia
Native American Boarding Schools
Substance Abuse in America: A Documentary and Reference Guide
The Reference Shelf: Arab Spring