I noticed he had gone to Bali to write his book...wonder if anyone else was there during that time.
I wondered that also. Bali trip before their marriage. BHO & Michelle in Bali in 90s — early 90’s. I think he finished book in 1992, IIRC
http://www.freerepublic.com/focus/news/2355925/posts?page=273#273