OK, since it looks like these libraries are going down after all, can we systematically download the content in them that's verifiably in the public domain, and upload it to the Internet Archive so that it becomes legitimately available and findable? There's a lot of such stuff that gets entirely fraudulent copyright claims tacked on to it, or claims that might apply only to supplemental matter (especially prefaces) that can be stripped out of a (DRM-free!) PDF file. And if something was first published before the late 19th century, it's quite obviously PD even in "life+X" countries where it might be hard to find info about all the people who could've had a hand in it back then.