There is much more data about this in the valuable book, "What Is Scientology?" It contains a wealth of information, and will answer many of your questions. It also contains copies of paintings which sketch the life of L. Ron Hubbard, the founder of Dianetics and Scientology.
"Persons appearing in this video are thanked for their contribution which was solely in the form of acting and not as technical nor editorial assistance." (No one is credited or identified by name except for L. Ron Hubbard
, Norman Starkey
, and the production company.) See more