Marcellus Flemming Berry was an American inventor who devised the traveller's cheque while working for American Express.Riggs, Thomas, and Mary Bonk. Everyday Finance: Economics, Personal Money Management, and Entrepreneurship. Detroit: Gale Cengage Learning, 2008. p.384 Bailom, Franz, Kurt Matzler, and Dieter Tschemernjak. Enduring Success: What Top Companies Do Differently. Basingstoke [England]: Palgrave Macmillan, 2007.p.129
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