Where to Download the Millions of Free eBooks that Secretly Entered the Public Domain

"Everyone is paying for books when they don’t have to. There’s so many ways to read almost anything ever published, for free, that it borders on the obscene. Libraries: They’re good! Sure, if you want the latest release from your favorite author you either have to pay or wait for a copy from the library, but for millions of older books, you can get a digital version, legally, for free. One secret of the publishing industry is that most American books published before 1964 never extended their copyright, meaning they’re in the public domain today...."