John Charles Frémont led a series of expeditions in the 1840s which answered many geographic question. He crossed through the Rocky Mountains by five different routes, and mapped parts of Oregon and California.
BLACK JACK KETCHUM
Black Jack Ketchum is considered the last of the train robbers. He was condemned to be hanged and was decapitated when he dropped through the trapdoor. There’s only two recorded cases of this happening in all history.