"Johannes Gutenberg printed playing cards the same year as his famous Bible (1440). The cards from Gutenberg's press were Tarot cards, from which the modern deck is derived. The Theory of Gambling and Statistical Logic". Book by Richard Arnold Epstein, 1977.
David F. Swensen (2009). “Pioneering Portfolio Management: An Unconventional Approach to Institutional Investment, Fully Revised and Updated”, p.8, Simon and Schuster