Independence Hall Association
U.s. History: The Philadelphia Campaign the Battle of Brandywine
A excellent and detailed depiction of the first battle of Philadelphia Campaign of 1777, with related links.
Pennsylvania Historical and Museum Comission
Explore Pa History: The Philadelphia Campaign Valley Forge
Learn about the people and events surrounding the Battle at Valley Forge in this detailed account of Pennsylvania history. Included in this site are links to audio and pictorial images of this era.