National emergency library
The visionary and great-hearted Brewster Kahle has done it again:
https://archive.org/details/nationalemergencylibrary
The internet archive in san francisco (!) is making1.4 million books availble for free online. Support your local bookstore! But if you can't, you can still read.
This is a maneuver the relies on fair-use provisions of copyright, but it's one that's open to libraries of all kinds during emergencies. (And, yes, we are looking at you, JSTOR.)