Robert Leroy Ripley was an American cartoonist who created and developed the world-famous Ripley's Believe It or Not! cartoon strip in the years after the First World War. He travelled the globe in search of unusual objects and stories. His findings are now exhibited in Ripley museums around the world, including one in London's Piccadilly Circus. The Ripley's Believe It or Not! annual has become an international bestseller.