From a comment Newt posted above, there really is nothing stopping a catalog of the work, since VM is dead. There is no true copyright owner. If someone wanted to put together a catalog, not much would stop them. It would be an interesting twisted legal argument for one of the negative holders to try to claim any type of copyright. As we have seen from the Richard Prince episodes it wouldn't stand a chance. The fact that she had no heirs is a great thing for us since the images are generally open. The negative is not the intellectual property, the image is. Neat huh? This is the part of copyright law that lets people make a book of the FSA images of AA for example, or publish old movies on the internet.