► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />David Rubenstein, founder of Carlyle Group, says US billionaires should help preserve historical documents and monuments.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes<br /><br />FT Wealth<br />More FT Wealth coverage<br />http://www.ft.com/reports/wealth<br /><br />Click here for more FT Wealth videos <br />http://video.ft.com/Ft-Wealth
