Credo Reference provides access to a broad variety of reference sources from dictionaries to encyclopedias covering topics from the arts to the sciences. It has an image collection, maps, customizable data, and audio pronunciation files. You can search the whole collection or a specific subject area.
Here is a small sampling of some of the reference books available via the Healey Library.
Print reference works in History are available in the 4th Floor Reference stacks and electronic reference works are available through the Library's online reference collections.
A Dictionary of Book History by 
The Dictionary of Historic Nicknames: A Treasury of More than 7,500 Famous and Infamous Nicknames from World History by 
Dictionary of the History of Science by 
Encyclopedia of African American Culture and History by 
Encyclopedia of Medical History by 
