Booth's Escape from D.C. to Maryland

From Wikipedia "Assassination of Abraham Lincoln."

Within a half hour of fleeing Ford's Theatre, John Wilkes Booth crossed the Navy Yard Bridge into Maryland.  An army sentry questioned him about his late-night travel;  Booth said he was going home to the nearby town of Charles.

Even though it was illegal for civilians to cross the bridge after 9 p.m., the guard let him cross.

David Herold made it to the same bridge  less than an hour later and rendezvoused with Booth.

After retrieving weapons and supplies they had previously stashed at Surrattsville, they  went to the home of Samuel A. Mudd, a local  doctor, who splinted  the leg Booth had  broken when jumping from the presidential box at Ford's Theatre.  He later made a pair of crutches for Booth.

And, who was the sentry at the bridge who let Booth and Herold cross?

Why, it was Sgt. Silas T. Cobb.

More On Him Later.  --Old B-Runner