I paid Howard for the research information (did you pay his widow?), on this and other flags, with the same agreement not to share it, outside of making a flag, until it was published. I also have a similar agreement with other respected vexillologist, museums, etc.. However you should know that he did put forward a theory on it, in one of his publications. I got the drawing back in 1993 or there about’s, any updates after that, I was not privileged to receive. So, as to why you could not find it in his papers is something I can not help you with.
You chose this open platform, not me, to be petty. Out of curiosity, what is your problem with someone making money? It seems to be an irritating theme with you on finding something I say that you disagree with.
Happy Trails!
Tom Martin