Larry crashes a party in Boston Harbor. Jonesy makes a stop on the Underground Railroad. The Wright Brothers prepare for their first flight. Senator Joe McCarthy calls out his fellow congressmen for their problematic conduct.

Larry plays a key role during the showdown at the O.K. Corral. President Lincoln receives advice from his Chief of Staff, Lawrence Butterfield. President Johnson recruits Butterfield to help convince a grieving Mary Todd to move out of the White House.