There are at least 70K public domain ebooks. There are sources that say there are 1 M public domain ebooks. https://libguides.library.umkc.edu/OER/PublicDomai

There are at least 70K public domain ebooks. There are sources that say there are 1 M public domain ebooks. https://libguides.library.umkc.edu/OER/PublicDomainBooks https://libguides.library.umkc.edu/OER/PublicDomainBooks Also there are thousands and thousands of DRM free ebooks to purchase. Possibly millions. https://www.tomsguide.com/tablets/e-readers/no-kindle-no-problem-5-places-to-buy-drm-free-e-books https://www.tomsguide.com/tablets/e-readers/no-kindle-no-pro...