I just found this nice map from my friend Paul's trip behind the barrier islands of the Eastern Shore. He wrote about the trip a few years ago in Chesapeake Bay Magazine.
I'll use this map tonight as I put in waypoints for the second day of sailing down the shore. Some of our sailing will, weather permitting, be outside of the barrier islands, but some will be inside. I'll have a closer look at the inlets this evening when I connect the gps to my laptop and look at the Garmin bluechart for the area.