Back to the opening of this thread.
“Mind you, we’re not talking about putting her picture on a billboard or on a magazine, but just hanging on the wall of my own house. Nonetheless, he said, it’s forbidden.”
See page 252 of Artscrolls Biography of R’ Moshe. There is a portrait photo of R’Moshe and his Rebbetzin. If it was 100% assur to hang such a photo in ones home, is it not that much worse to then take the same photo and print it in a book that would be sold to thousands of people and read by even thousands more? there are similar such photos in the book as well as in other biographies. If it IS Assur, perhaps this person should explain that to the folks at Artscroll so that they wont be nichshal so many people.