National Parks: Yellowstone National Park
US Supreme Court Landmark Cases: Marriage Equality: Obergefell v. Hodges
National Parks: Yosemite National Park
Vaccination and Its Critics: A Documentary and Reference Guide
Women in Science: Jane Goodall: Primatologist and UN Messenger of Peace
The Nile: An Encyclopedia of Geography, History, and Culture
Encyclopedia of American Civil Rights and Liberties
Hidden Heroes: The Stonewall Riots: The Fight for LGBT Rights
US Supreme Court Landmark Cases: Desegregating Schools: Brown v. Board of Education
Special Reports, Set 2: The War on Poverty
Hidden Heroes: Women with Wings: Women Pilots of World War II
National Parks: Grand Canyon National Park
Defying Convention: Women Who Changed the Rules: Women Writers
National Parks: Everglades National Park
National Parks: Glacier National Park
Collective Biographies: Women Scientists and Inventors
The Bill of Rights: Freedom of Speech, the Press, and Religion: The First Amendment
American Citizenship: Constitutional Rights
Resisting the Holocaust: Upstanders, Partisans, and Survivors