There are a bunch of books on this list which I do not find particularly relevant to liberty. In fiction:
Aeneid, The by Virgil
Catcher in the Rye, The by J. D. Salinger
Dr. Jekyll & Mr. Hyde by Robert Louis Stevenson
Dracula by Bram Stoker
East of Eden by John Steinbeck
Frankenstein by Mary Shelley
Grapes of Wrath, The by John Steinbeck
Great Expectations by Charles Dickens
Gulliver's Travels by Jonathan Swift
Iliad, The by Homer
Invisible Man, The by Ralph Ellison
Iron Heel, The by Jack London
Lord of the Flies by William Golding
Monkey Wrench Gang, The by Edward Abbey
Odyssey, The by Homer
Of Mice and Men by John Steinbeck
One Flew Over the Cuckoo's Nest by Ken Kesey
Stranger in a Strange Land by Robert A. Heinlein
To Kill a Mockingbird by Harper Lee
Explanations: Almost any work can be related to freedom somehow, from Back to the Future to Karate Kid, but that doesn't mean the relation is strong or important. Look, Aeneid, Iliad, and Oddessy are classics, no doubt about it, and if this was just a list of "books every educated person should read" then OK, but it's supposed to be about liberty specifically. These aren't. Jekyll, Dracula, Frankenstein all have something in common but liberty isn't it. Steinbeck is not pro-freedom, I'm sorry, he just isn't. Mice and Men is just completely anti-businessman "progressive"/Marxist junk with apparently helpless, worthless protagonists. Lord ofthe Flies is positively anti-freedom (look at what horrible things happen if you have freedom! Never consider they could've set up property rights to beat the tragedy of the commons). The Iron Heel, also strongly anti-freedom. With Catcher, East, Great, Gulliver, Invisible, Cuckoo, Mockingbird, it's like we just went down an American high school curriculum list. Any connection in these books to liberty would be a stretch and it's definitely not the main thrust of the books. I love Heinlein but of all his books Stranger has about the least liberty content. Thought-provoking book for sure but not important in the literature of liberty.
So, I propose these for excisement.
Listed below are books with which I'm not familiar enough and may be pro-freedom or may not, so others, please speak for them:
Alas, Babylon by Pat Frank
American Psycho by Bret Easton Ellis
Brothers Karamazov, The by Fyodor Dostoevsky
Catch-22 by Joseph Heller
Clockwork Orange, A by Anthony Burgess
Crime and Punishment by Fyodor Dostoevsky
Darkness at Noon by Arthur Koestler
Doctor Zhivago by Boris Pasternak
Elmer Gantry by Sinclair Lewis
Envy by Yuri Olesha
Fool's Progress, The by Edward Abbey
Gilded Age, The: A Tale of Today by Mark Twain and Charles Dudley Warner
Island by Aldous Huxley
Julius Caesar by William Shakespeare
Last Town on Earth, The by Thomas Mullen
Letters From the Earth by Mark Twain
Lost Horizon by James Hilton
Master and Margarita, The by Mikhail Bulgakov
Naked Lunch by William S. Burroughs
Notes From Underground by Fyodor Dostoevsky
On the Beach by Nevil Shute
Plague, The by Albert Camus
Player Piano by Kurt Vonnegut
Practical Princess, The by Jay Williams
Publicani by Zak Maymin
Slaughterhouse-Five by Kurt Vonnegut
Tale of Two Cities, A by Charles Dickens
World Inside, The by Robert Silverberg