Christopher Columbus
Henry Hudson
Amerigo Vespucci
John Smith
Giovanni da Verrazzano
John Muir
Meriwether Lewis and William Clark
Sacagawea
Kit Carson
Neil Armstrong
John Wesley Powell
Henry Hudson
Amerigo Vespucci
John Smith
Giovanni da Verrazzano
John Muir
Meriwether Lewis and William Clark
Sacagawea
Kit Carson
Neil Armstrong
John Wesley Powell