From 2001...
https://www.nytimes.com/2001/02/01/business/worldbusiness/IHT-clintons-top-trustbuster-signs-on-with-bertelsmann.html
From 2017...
https://www.wsj.com/articles/memoir-deal-with-obamas-makes-sense-for-both-sides-says-bertelsmann-chief-1490690464
Former President George W. Bush to write book