Based on sales for the week ending July 7, 2013

11. To Kill a Mockingbird
Harper Lee, Grand Central, $7.99, 9780446310789

12. World War Z
Max Brooks, Broadway, $9.99, 9780770437404

13. Lord of the Flies
William Golding, Berkley, $9.99, 9780399501487

14. Animal Farm
George Orwell, Signet, $9.99, 9780451526342

15. American Sniper
Chris Kyle, Harper, $9.99, 9780062238863

16. Slaughterhouse-Five
Kurt Vonnegut, Laurel Leaf, $7.99, 9780440180296

17. The Name of the Wind
Patrick Rothfuss, DAW, $8.99, 9780756404741

18. The Long Earth
Terry Pratchett, Stephen Baxter, Harper, $9.99, 9780062068682

19. Speaker for the Dead
Orson Scott Card, Tor, $7.99, 9780812550757

20. Bossypants
Tina Fey, Reagan Arthur/Little Brown, $8.99, 9780316056892

21. Good Omens
Neil Gaiman, Terry Pratchett, HarperTorch, $7.99, 9780060853983

22. The Fallen Angel
Daniel Silva, Harper, $9.99, 9780062073150

23. Killing Floor
Lee Child, Jove, $9.99, 9780515153651

24. The Wise Man's Fear
Patrick Rothfuss, Daw, $9.99, 9780756407919

25. American Gods
Neil Gaiman, HarperTorch, $7.99, 9780380789030

26. Dune
Frank Herbert, Ace, $9.99, 9780441172719

27. The Diary of a Young Girl
Anne Frank, Bantam, $7.99, 9780553577129

28. The Hobbit
J.R.R. Tolkien, Del Rey, $8.99, 9780345534835

29. The Lost Symbol
Dan Brown, Anchor, $9.99, 9781400079148

30. The Affair
Lee Child, Dell, $9.99, 9780440246305

31. The Hitchhiker's Guide to the Galaxy
Douglas Adams, Del Rey, $7.99, 9780345391803

32. The Pillars of the Earth
Ken Follett, Signet, $9.99, 9780451232816

33. Calico Joe
John Grisham, Dell, $7.99, 9780345541338

34. Atlas Shrugged
Ayn Rand, Signet, $9.99, 9780451191144

35. Stolen Prey
John Sandford, Berkley, $9.99, 9780425260999

36. Fall of Giants
Ken Follett, Signet, $9.99, 9780451232854

37. Hunted
Kevin Hearne, Del Rey, $7.99, 9780345533630

38. Persuader
Lee Child, Dell, $9.99, 9780440245988

39. The Storm
Clive Cussler, Graham Brown, Berkley, $9.99, 9780425259658

40. Without Fail
Lee Child, Jove, $9.99, 9780515144314

41. Earth Unaware
Orson Scott Card, Aaron Johnston, Tor, $7.99, 9780765367365

42. Black List
Brad Thor, Pocket, $9.99, 9781439193020

43. The Official Scrabble Players Dictionary, 4th Edition
Merriam-Webster, $7.50, 9780877799290

44. Tripwire
Lee Child, Jove, $9.99, 9780515143072

45. Die Trying
Lee Child, Jove, $9.99, 9780515142242

46. Outlander
Diana Gabaldon, Dell, $8.99, 9780440212560

47. The Shining
Stephen King, Anchor, $7.99, 9780307743657

48. Xenocide
Orson Scott Card, Tor, $7.99, 9780812509250

49. Still Life
Louise Penny, St. Martin's, $7.99, 9780312948559

50. Friends Forever
Danielle Steel, Dell, $7.99, 9780440245247