But, what caught me by surprise was Pattern Number given by The National Needlecraft Bureau --- No 116.5. A couple more looks and the answer because quite apparent.
American Thread Book 116; the pattern appears on Page 5.
So, my thought here ... i.e., the trivia, is The National Needlecraft Bureau may not have assigned their own numbering system, but simple tied the pattern number to the originating publication.
Okay, so it's probably not trivia of great interest to most, but I'm becoming more and more fascinated by the relationships and systems among these vintage pattern publishers.
Okay, back to work.
Thanks for dropping by,