People still speak of the Internet "freeing" information. But not everything a futurist dreams comes to fruition. Copyright law restricts the lending of ebooks. However, libraries have hundreds of years of history of lending printed books, and we still do it today. As a CSS student you have access to almost every library in the state. If you can give us a week, we can open the door for you to over 5 million printed books.
As a rule, any book published before the 1920s is not protected by copyright and has moved into the public domain. Various entities have developed projects to digitize these books.
Library of Congress Subject Headings (LCSH) has been actively maintained since 1898 to catalog materials held at the Library of Congress.