A great Civil War spy image off of Wikipedia
“01/01/1863 – Long Bridge, Lincoln’s Time. Washington, D.C. Union troops guarding a bridge over the Potomac River to Virginia to prevent infiltration by Confederate spies.”
A great Civil War spy image off of Wikipedia
“01/01/1863 – Long Bridge, Lincoln’s Time. Washington, D.C. Union troops guarding a bridge over the Potomac River to Virginia to prevent infiltration by Confederate spies.”