And I dislike being condescended to. Immensely.
In point of fact, while variants on that image are absolutely in the public domain, my retouched scan of it is not. That's textbook. And regardless, as I said before you deigned condescend to me, I was only posting that I had the copyright to the image and had used public domain fonts in order to make it perfectly clear that I was not, myself, in violation of any intellectual property laws. You surely saw that, as you quoted it. So no need to act all expert on it; I know the laws backwards and forwards.
I'm sorry if you felt like I flew off the handle, but as a professional who's been at this for decades, I felt insulted.