Earlier on this thread discussion took place about the chance that BK might have read Ken Keyes books while in the halfway house.
Be that as it may, on the Wikipedia page for Ken Keyes, there is this
Keyes died in 1995
Ken Keyes, Jr. (January 19, 1921, Atlanta, Georgia – December 20, 1995, Coos Bay, Oregon) was a personal growth author and lecturer, and the creator of the Living Love method, a self-help system. Married four times, Keyes wrote fifteen books on personal growth and social consciousness issues, representing about four million copies distributed overall.
In his life Keyes sold or distributed millions of books, lectured to many people, spoke to dignitaries at political gatherings, and knew and moved among the self-help elite, including Wayne Dyer, who said that Keyes "literally got me started on this glorious transformational journey." His books are still available thirteen years after his death, and a small group of his students maintain ties and carry on his methods. However, Keyes' organization essentially died with him.
Keyes employed no explicit strategies to ensure his organization would continue or grow without him, and he did nothing that would promote any established organization or personal legacy. He focused, instead, on teaching his methods. He never sought out a major publisher for his books, but self-published them all, and even brought back in-house one book that had been placed with a major publisher. Of the three teaching centers he founded, only the last was eponymous.