You were telling me what was "legal", and implying that my actions were ethically wrong. You certainly weren't trying to help me find the images.
As there are many reasons to display and discuss and, dare I say it, make use of some 60-year-old (and older) images, I find your implications insulting.
Sarcasm is the only socially acceptable response to such behavior that I'm capable of. I'm capable of other responses, but they lack... subtlety.
m a r