There is a minhag I have heard of where in addition to covering all of the mirrors in the mourner's house they would also cover all pictures of the deceased. I have long tried to find a source for this minhag, and eventually I did find a sefer discussing it, though I can't find that sefer anymore. Has anyone else heard of this minhag, and where it might be sourced?
It does not seem to be because the pictures are shiny and could be like mirrors, because all pictures would then be covered, and pictures that are not in frames shouldn't be.