Ancient Europe, 8000 B.C. to A.D. 1000: An Encyclopedia of the Barbarian World
St. James Encyclopedia of Labor History Worldwide
The Gale Encyclopedia of the Unusual and Unexplained
Industrial Revolution Reference Library
Great Depression and the New Deal Reference Library
Nonfiction Classics for Students
Junior Worldmark Encyclopedia of Physical Geography
Renaissance and Reformation Reference Library
Africa: An Encyclopedia for Students
Political Theories for Students
Historic Events for Students: The Great Depresssion