unanswered questions

Why is it never mentioned in the multiple editions of "friend found", the existence of these two texts, which I discovered by accident looking for a DVD?
Uhlman Why has he insisted that "The letter of Conrad" is published only after his death?
Why these three texts, which formed for him a true trilogy, they are never published together?
Why only a French editor (thank you to him) he published the two texts? (The original English edition does not even exist ...)
All three versions of the same story shall, by cross-checking and dehiscence depth and flavor unheard in a trilogy that she deserves literally the title of "Reunion", given in the English version as a story of Hans.