One Search is a great place to start your research. It allows you to simultaneously search through a variety of databases and the ECU Libraries' catalog.
e-books are searchable by our Catalog and through the E-Journal/E-Book Portal. Additionally, you may wish to go directly to one of the ECU Libraries' subscription databases for e-books. They are linked here:
Frontispiece from Thomas Hobbe's Leviathan taken from the Library of Congress's "World Treasures: Beginnings" Exhibition. This image and others can be found at The Library of Congress's Exhibits page.
Use WorldCat to locate materials outside of ECU, or to locate items in specific libraries and research collections.
Use InterLibrary Loan and Document Delivery services to request articles, books, media, and more from other libraries when ECU libraries do not have what you need.
The Google Books project provides some full-text of books, if the book is out of copyright or the publisher has given permission for digitization.