The rich, tragic history of daredevil Wallendas - CBS News
Nik Wallenda finishes high-wire act that killed great-grandfather - CNN.com
Wallendas have tragic history in Detroit
Nik Wallenda - Wheel of Death at Tropicana Atlantic City | Flickr
ABC News - "Karl Wallenda" (1978) - YouTube
Tightrope Walker Karl Wallenda Fell To His Death On Live Television
Nik Wallenda prepares to walk across Niagara Falls - CBS News
Nik Wallenda breaks records with TWO death-defying tightrope walks between Chicago skyscrapers - one at a terrifying 19-degree incline and the second wearing a BLINDFOLD and navigating by ear | Daily Mail