Wolf, there is a tremendous difference between hanging a picture of your mother in your home and publishing her picture in a mass-circulation newspaper. Please don’t make a mockery of the discussion; any guest who comes to a home will obviously see the woman of the house over the course of the meal; but that doesn’t mean her shabbos table should be broadcast on national TV (Shabbos aside). Do you see the difference?
Having said that, *perhaps* it is, in truth, more dignified for the woman that her picture not be there. I don’t know what the answer is to that, but ask you LOR if you’re interested in knowing you’re for sure doing what’s right. Personally, I don’t recall seeing any pictures of women in any of the Roshei Yeshiva’s homes that I have been to, but perhaps one cannot extrapolate from that.
I am a little amused by the whole “erased from history” argument. Again, nobody forbade taking a woman’s picture, and many people of all sects and types do so. So much for worrying about preserving history. But that doesn’t mean the pictures have to be published in general circulation newspapers. And even if historical record were a concern, it still does not override the kavod due to a bas melech, so it would be a moot point, anyways.