Archival Research Catalog
The online catalog of the nationwide holdings of the National Archives and Records Administration (NARA) in the Washington, DC area, Regional Archives and Presidential Libraries. It replaces its prototype, the NARA Archival Information Locator (NAIL).

Archives Made Easy
An online guide to archives around the world.

The Center for Research Libraries (CRL)
The University of Delaware Library is a member of CRL and CRL materials may be obtained on interlibrary loan by qualified University of Delaware borrowers.

Oral History Research Office, Columbia University
This collection of audiotaped and trascribed oral interviews preserves the knowledge, experiences, and recollections of leaders in many fields of history, politics, and culture. The focus is on national political history.

The Huntington / Library, Art Collections, and Botanical Gardens
The Huntington Library has a rich collection of rare books and manuscripts principally in the fields of British and American history and literature. Other research strengths include 15th-century books, history of science, and maritime history.

John D. Rockefeller, Jr. Library (Colonial Williamsburg)
The John D. Rockefeller, Jr. Library is a research library specializing in the history and culture of the colonial Chesapeake. Of special interest is an index to the several hundred research reports written at Colonial Williamsburg over the last sixty years. Early American History Research Reports are distinguished for the significant amount of primary source material in them and for their time and place specificity: eighteenth-century Virginia.

Library at The Mariners’ Museum
The largest maritime history collection in the Western Hemisphere, located in Newport News, Virginia.

Library Catalogues on the Internet
Maintained by Uppsala University Library.

The Library of Virginia
Includes access to the LVA Digital Collections.

National Archives and Records Administration (NARA)
NARA's Digital Classroom provides materials from NARA, methods for teaching with primary sources, and sample lesson plans.

The New York Public Library: The Research Libraries

The Newberry Library
One of the world’s leading repositories of a broad range of books and manuscripts relating to the civilizations of western Europe and the Americas.

Philadelphia Area Consortium of Special Collections Libraries (PACSCL)
Online catalogs of six special libraries in the Philadelphia area: The Academy of Natural Sciences, Athenaeum of Philadelphia, Balch Institute for Ethnic Studies, Library Company of Philadelphia, Philadelphia Museum of Art, and the St. Charles Borromeo Seminary. There is a link to the union catalog from the catalogs of each individual members. Eventually the catalogs of the Historical Society of Pennsylvania, the Presbyterian Historical Society, and the Rosenbach Museum & Library will also be available.

Rare Book & Special Collections Reading Room, Library of Congress

Repositories of Primary Sources