Did he have a typewriter in prison or did he write by hand? Are there any first drafts left or personal notes and commentaries? I was always interested how he was allowed to write and was able to get the necessary tools in prison, and also whether there are any of the artifacts left from that time. Considering that the Nazis had a tendency to make any objects related to Hitler near sacred.
Hitler was not holed up in an empty cell to rot. He was able to obtain extensive privileges in prison. He was allowed to wear a tie, give interviews, and so on. Mein Kampf was mostly dictated to Rudolf Hess, who also edited the book, while Hitler was still in prison. The first volume was released in July 1925, half a year after he was released - Hitler only served eight months of his five-year sentence which should give you an idea of how leniently he was treated. At some point Hitler had realized it would have to be a two-volume work, and the second was only released in 1926. Since it was dictated in a rather mundane manner, I don't think any related paraphernalia was venerated. I've never heard of anything to that effect.
If you read it, you will understand why editing it took so long compared to its composition - it's a series of incoherent rants.
Source: Hitler: Hubris, Kershaw