This article, written by Carl Olof Jonsson (for The Christian Quest) might just surprise you.
Many Witnesses have a sense that it was only seen dimly by Russell’s associates, and that through his keener insights, Russell was the only one who could make sense of the doctrine. Others will know that even Russell admitted (in Zion’s Watch Tower) that this idea came from others who were already associated with Nelson Barbour. However, there is much more to it.
Currently this is available as a scanned document in PDF. We will work on getting a better scan without extraneous space and pages, but thought it would be so interesting that we are making it available immediately.