When Maharishi Mahesh Yogi asked Charlie to update the preface for his newly revised edition of "The Science of Being and Art of Living", Charlie added a new opening paragraph. This is the only difference between this and the original edition.
This revised edition was published by International SRM Publications in 1966.
Remembering Charlie through his recordings...
Thank you, Jim Conroy, for sharing these audio recordings which are placed on YouTube as well as here.
Be sure to visit Vince's website, too: Maharishi Photos, as well as this internet archive of Helen and Charlie.