Lewis Powell: The conspirator who was "different."

[Dennis Urban]

Help me out here. I know I read that Powell's coat was found in the northeast area near Bladensburg, MD. I understand the fall from the horse which makes sense with his injuries (unless Stanton had something to do with that), but I was unaware of his being knocked out. What is the attribution for that? I do believe he was trying to find his way to Baltimore where he had friends and acquaintances and could make good his escape through that city.