I found my copy of the Ludo Janssens booklet on Tazewell Gatling Nicholson (Yes, that Gatling). It has no information on when it was printed, if it is copyright or who the publisher is. About ten years ago Ludo stopped answering emails. I was sending him covers I located that were not in his catalog. The first printed page after the cover is the preface.
Universal Ship Cancellation Society