Stephen Calt told me that Mack McCormick has the most detailed collection of different places Johnson played, the aliases used in specific locations, who traveled with him to certain places, and much much more. If Calt is to be believed Mack has accounts of him leaving his playing partners in the middle of the night to travel solo, and when it happened to specific musicians. Even if you saw it you couldn't do anything about it. Like you said, "because it is that collector's livelihood and hard work and reputation that would be violated." Good luck Randy but this endeavor will likely die a very sad death since he never hands over his RJ information. Some other collectors have some of this information also according to Calt but they are tied to books about RJ that have been in the works for over a decade that will likely never see the light of day. If books aren't finished when someone is in their 50s and 60s the likelihood of it happening when they are in their 70s and 80s isn't good. Not good at all.