LOL, you guys just won’t give it up.
The term “letter” is used in this thread because that is the term used in the title and that is because the August issue of Model Railroader magazine calls it a “letter”.
As for why no one has actually stated why Mr. Fuller is obligated to inform anyone other than subscribers, that is because no one said that he is obligated to inform anyone.
As I stated at least twice in this thread, Firecrown is “missing an opportunity” by not publishing the letter on this forum. But, that issue has now been resolved.
Rich