Try these great sites for locating the primary source for your research!

Evaluating primary sources from the American Library Association

Evaluating Primary Sources

Avalon Project

Documents of history, law and diplomacy​ from Yale

Making of America

A digital library of primary sources in American social history from the antebellum period through reconstruction.

Library of Congress

American Memory Project at Library of Congress

Smithsonian Museum

National Portrait Gallery

Click on Portrait Search, on the left, then search. Check the image search only.

Infotopia Primary Sources