Robert Wadlow, World's Tallest Man, Alton, Ill. roadsideamerica.com Robert Wadlow, World's Tallest Man, Alton, Ill. Robert Wadlow, World's Tallest Man http://www.roadsideamerica.com/story/2086 Robert Wadlow, World's Tallest Man, Alton, Illinois http://www.roadsideamerica.com/story/2086 http://www.roadsideamerica.com/story/2086