In the 1970s, there appeared a collection of documents, obtained through the Freedom of Information act. It was called "The Shannon Biography."
http://www.xenu-directory.net/opinions/shannon.html
It was one of the first collections of documents, and was handed around, in a large yellow envelope. There was no Internet.
Around that same time, plans were being made, by Scientology, for an official "LRH biography." This was to be a large book, perhaps as large as a thousand pages.
A few years later, this '60 Minutes' program aired on American television.
Omar Garrison, who, initially, had been sympathetic towards Scientology, and had been hired by Scientology for various writing assignments, was given access to Hubbard's archives, in preparation for the proposed upcoming official biography. He became disillusioned and wanted out of the project.
At around 4:12 of this video, he's asked about Hubbard:
http://www.youtube.com/watch?v=m5Drk3eVQSg
If one cares to view the entire video, it's interesting that the arguments, by the Scientology "Hubbard fan(atic) club" PR folks, haven't changed much in all these years.