World War II: The Definitive Encyclopedia and Document Collection
Essential Library of World War I: World War I Weapons
The World of the American West: A Daily Life Encyclopedia
Primary Sources of the Abolitionist Movement: The Women's Rights Movement and Abolitionism
Essential Library of World War I: World War I Leaders
Special Reports: Vaccination Debate
Frontline Families: World War I: Frontline Soldiers and Their Families
Essential Library of World War I: Women in World War I
Explorers of the American West: Mapping the World through Primary Documents
The Civil War and Reconstruction Eras
Influential Women: Malala Yousafzai
ISIS: An Introduction and Guide to the Islamic State
Primary Sources of the Abolitionist Movement: Frederick Douglass and William Garrison