Bartolomé de Las Casas – Encyclopedia of U.S. History
Labor Movement – Encyclopedia of U.S. History
Ku Klux Klan – Encyclopedia of U.S. History
Korean War – Encyclopedia of U.S. History
Know-Nothing Party – Encyclopedia of U.S. History
Knights of Labor – Encyclopedia of U.S. History
Henry Kissinger – Encyclopedia of U.S. History
King William’s War – Encyclopedia of U.S. History
King George’s War – Encyclopedia of U.S. History
Martin Luther King Jr. – Encyclopedia of U.S. History