D-Day: The Essential Reference Guide
Debating History: Debates on the Soviet Union's Collapse
National Parks: Grand Canyon National Park
Race in American Film: Voices and Visions That Shaped a Nation
National Parks: Yosemite National Park
The Sea in World History: Exploration, Travel, and Trade
The Bill of Rights: Freedom of Speech, the Press, and Religion: The First Amendment
Vaccination and Its Critics: A Documentary and Reference Guide
US Supreme Court Landmark Cases: Desegregating Schools: Brown v. Board of Education
Vaccines: History, Science, and Issues
Defying Convention: Women Who Changed the Rules: Women Writers
Collective Biographies: Women Scientists and Inventors
The Holocaust: An Encyclopedia and Document Collection
National Parks: Yellowstone National Park
National Parks: Great Smoky Mountains National Park
National Parks: Everglades National Park
Hidden Heroes: Women with Wings: Women Pilots of World War II
National Parks: Glacier National Park
The Nile: An Encyclopedia of Geography, History, and Culture