Here are some of my favorite places to find historical information. Sources, research help, and juicy tidbits of history. I will update and add to this list periodically.

U.S. Library of Congress

National Archives

Fordham University history sourcebooks project

The Walter Koessler project

Digitized newspapers

U.S. Army historical publications

U.S. Army guide to military history

A jam-packed and approachable history blog

Rare antique photos on Retronaut