All Things in the Bible

This encyclopedia surveys the customs, professions, beliefs, and people of the Bible.

Encyclopedia of the Crusades

Explores the Crusades and ranges from the classic numbered crusades in the Middle East to the Reconquista in Spain, and from the Baltic Crusades to the crusades against Albigensian heretics in France. This book includes not only European leaders and themes but also biographical portraits of Islamic leaders and topics related to Islamic culture.

Encyclopedia of Islam and the Muslim World

This encyclopedia looks at Islam's role in the modern world in the context of the religion's history and development over the last 13 centuries. It contains thematic articles, biographies of key figures, definitions, illustrations, maps, and more.

Encyclopedia of Islam in the United States: Volumes 1 and 2

Focuses on contemporary information on the beliefs, practices, notables, and sects of the Islamic faith and Muslim practitioners in the United States.

Encyclopaedia Judaica

Provides an overview of Jewish life and knowledge from the Second Temple period to the contemporary State of Israel, from Rabbinic to modern Yiddish literature, from Kabbalah to "Americana" and from Zionism to the contribution of Jews to world cultures.

Encyclopedia Mythica 

Authoritative online encyclopedia of mythology, folklore, and religion.

Encyclopedia of Philosophy

Presents a wide range of information on philosophical subjects.

New Catholic Encyclopedia

Has articles on theology, philosophy, history, literary figures, saints, musicians and much more.

Renaissance and Reformation, 1500-1620: A Biographical Dictionary
Contains brief, introductory information about various individuals who made outstanding contributions to the culture of Western civilization from 1500-1620.