As you are starting to explore a new research topic, reference sources are a good way to gain background information on your topic. High quality, academic, multivolume sets, will often give you the beginnings of scholarly research on a subject by providing a short bibliography of important works on the subject.
Even with advanced subject knowledge of an area, you will run across unfamiliar people, places and events. Library reference sources will allow you to quickly fill in those gaps and improve your contextual knowledge with more reliability than a Wikipedia article.
To search for additional reference books, do an Advanced Search in HopeCat. Enter a general keyword on your topic and choose "Van Wylen Reference" as the location.
Credo is an online fullt text database of over 400 reference sources. You can search them all together to bring up a variety of articles related to a topic.
Search Credo
Examples of types of encyclopedia included in CREDO:
Encyclopedia of the Renaissance
Encyclopedia of the Romantic Era, 1760-1850
Encyclopedia of World Trade: From Ancient Times to the Present
The Italian Renaissance State
Opinions Throughout History: Diseases & Epidemics
The Oxford Companion to British History
Places of Encounter: Time, Place, and Connectivity in World History, Volume Two: Since 1500
Plagues upon the Earth: Disease and the Course of Human History
Routledge Histories: The Routledge History of the Renaissance
World History: A Comprehensive Reference Set
A Cultural History of Animals in the Renaissance
A Cultural History of Childhood and Family in the Age of Enlightenment
A Cultural History of Sexuality in the Enlightenment
A Cultural History of Sexuality in the Renaissance
A Cultural History of the Human Body in the Enlightenment (1650 - 1800)
A Cultural History of Animals in the Age of Enlightenment