vienne, I have bad news and I have good news.
Bad news, you stated that "Some books were quietly dropped as quickly as possible." There is only one book which is not to be found in the app or .org, and that is the Commentary on the Book of James, which by the way was not a Franz but a Dunlap product. Even the Ezechiel book with its comment that the work is to be completed within the end of the 20th century, is there.
But I also have good news. I have just completed reading the "Separate Identity", volume I, and it was a very interesting and refreshing book. Although somewhat difficult to follow at times for a European not too familiar with the various American groups of the 19th century, it was - to quote myself - a very good book. I have ordered volume II from amazon.co.uk where it is far cheaper than at amazon.com, and look forward to receive it.