It's a fate that, if Don has it right, was reserved for quite a number of other publications.
- Modern Dating (Garner Ted Armstrong, 1969). Really bad advice by a dude who certainly hadn't practiced what he preached.
- Divorce and Remarriage (1953). The justification for the unyielding doctrine that split families apart, but was later revoked.
- Marriage and Divorce. More of the same from 1973.
- The Plain Truth about Child Rearing (Garner Ted Armstrong, 1970 edition). A truly horrid approach to raising kids. (PDF here)
- The Real Jesus (Garner Ted Armstrong, 1972). Jesus recrafted to fit the WCG's paradigm. Later bloated out into Ted's first full length book and released just before he was booted out of his father's church for good. (PDF here)
Alas, these publications survived unto this very day. Herb may have imagined he had prophetic insight, but he didn't forsee the Internet. The embarrassingly inaccurate The Proof of the Bible (1958) was a special case as it was enormously popular. It was supposed to be killed off and all stock destroyed in 1972 but was allowed to quietly fade into oblivion instead. That story was covered in some detail in Ambassador Report. (It appears that this was yet another example of plagiarism with Herb basically rewriting a 1933 Seventh-day Adventist publication called Prophecy Speaks by Earle Albert Rowell. )
The reason these titles are still with us is the devotion of an enduring Armstrong remnant who believe they are still relevant, or perhaps they're just on a nostalgia trip. The reason many of us appreciate their efforts is a bit different, the documentation of a system that would rather not be remembered "warts and all".
Douglas Becker has thoughtfully transferred Inside Story into flipping book format, and it's already (fast work!) available. You either love or loathe this format and, in general, I'm decidedly on the 'loathe' side, but in this case, due to the smaller size of the pages, it works really well, giving the genuine booklet 'feel'.