Here is a list of American Revolution picture books we will be reading this year with the younger kids. I have a few others listed on my side bar. I got most of the list of books from Cay Gibson's A Picture Perfect Childhood.
Liberty's Kids: Complete Series DVD
We the Kids: The Preamble to the Constitution of the United States
Let It Begin Here!: Lexington & Concord: First Battles of the American Revolution
George vs. George: The American Revolution As Seen from Both Sides
Sleds on Boston Common: A Story from the American Revolution
When Washington Crossed the Delaware