See http://reflectionsinhindsight.wordpress.com/category/history-american-revolution/
The entry for July 8, 2011 tells the story of "The Courage of Lydia Darragh" who warned Washington of a pending British surprise attack outside Philadelphia in 1777.
The entry for June 24, 2011 has an interesting item on Henry Knox.
There are prob other nuggets buried on this site.