Erik Sass

• The Mental floss history of the world
• The Mental Floss History Of The World An Irreverent Romp Through Civilizations Best Bits
• 101 Things You Didn't Know about World War I
• The Mental Floss History of the United States
• The Mental Floss History of the United States
• The Mental floss history of the United States
• The Mental Floss History of the World
• The Mental Floss History of the World: An Irreverent Romp through Civilization's Best Bits