Most Library online resources can be accessed from off campus by current UD faculty, staff, and students. When using links on these pages, you may be prompted for your UDelNetID and password. If you encounter problems accessing Library databases, e-journals, or e-books, use the UD proxy login page.

Delaware was the first state to ratify the proposed constitution of the United States. The date of the ratification, December 7, 1787, appears on both the state flag and the Delaware seal.

Welcome to the guide for Delaware history.

Court House, New Castle, Delaware, 1682. (Postcard, c. 1907). This was the Colonial Capitol where annual Assemblies met until 1776 and all Courts convened until 1882. From the University of Delaware Library Postcard Collection.

When researching historical events, it may be useful to know what day of the week the event occurred. To find this out, consult a perpetual calendar.

To gain perspective on other events occurring in the same time period as your research, consult a chronology, timeline, or "book of days." Here are examples of these types of resources.

The Library welcomes suggestions for books, journals, videos and other material. Please use the Recommendation for Purchase form to send your suggestions.