Thank you for posting these! The ones with the wagons especially make what I've been reading lately (period accounts of missing slaves as the federal army nears) really become real, as slaves take a chance and head toward the lines of the federals.
One thing I'm curious about is: I wonder where the wagons and teams typically came from, such as in the "Arrival of Negro Family in the Lines" just above, or "Fugitive Slaves Crossing the Rappahannock..."
Were they also taken from the owners? What a bold move, to pile everything you had (and more) onto your master's wagon, hitch up a team and drive off into uncertainty, taking not only yourself but probably hundreds of dollars of other things too. Not something a master would be happy to find when he discovered, and yet such a slim barrier against starvation. Would you keep the wagon, stay close and camp by it for a while, or use it to travel as far as possible to some known or unknown location, or sell it, use the money to survive and try to find work as soon as possible? What a challenge.