Based on sales for the week ending September 11, 2011

16. Inside of a Dog
Alexandra Horowitz, Scribner, $16, 9781416583431

17. The Glass Castle
Jeannette Walls, Scribner, $16, 9780743247542

18. Fifth Avenue, 5 A.M.
Sam Wasson, Harper Perennial, $13.99, 9780061774164

19. Lucky Peach, Issue 1: Ramen
Chris Ying (Ed.), McSweeney's, $10, 9781936365463

20. Sex at Dawn
Christopher Ryan, Cacilda Jetha, Harper Perennial, $15.99, 9780061707810

21. Griftopia
Matt Taibbi, Spiegel & Grau, $16, 9780385529969

22. Zeitoun
Dave Eggers, Vintage, $15.95, 9780307387943

23. 1491
Charles C. Mann, Vintage, $16.95, 9781400032051

24. What to Expect When You're Expecting
Heidi Murkoff, Sharon Mazel, Workman, $14.95, 9780761148579

25. The Old Farmer's Almanac 2012
Old Farmer's Almanac, $6.95, 9781571985446

26. The Four Agreements
Don Miguel Ruiz, Amber-Allen, $12.95, 9781878424310

27. The Wave
Susan Casey, Anchor, $15.95, 9780767928854

28. Slow Love
Dominique Browning, Plume, $15, 9780452297500

29. The Other Wes Moore
Wes Moore, Spiegel & Grau, $15, 9780385528207

30. Moneyball
Michael Lewis, Norton, $15.95, 9780393338393

31. The Big Short
Michael Lewis, Norton, $15.95, 9780393338829

32. The Official SAT Study Guide
College Board, $21.99, 9780874478525

33. Super Natural Every Day
Heidi Swanson, Ten Speed Press, $23, 9781580082778

34. Rand McNally Road Atlas 2012
Rand McNally, $13.95, 9780528003363

35. Into the Wild
Jon Krakauer, Anchor, $14.95, 9780307387172

36. The 5 Love Languages
Gary Chapman, Northfield, $14.99, 9780802473158

37. The Disappearing Spoon
Sam Kean, Back Bay, $14.99, 9780316051637

38. The Tipping Point
Malcolm Gladwell, Back Bay, $15.99, 9780316346627

39. Eat to Live
Joel Fuhrman, Little Brown, $15.99, 9780316120913

40. Don't Let's Go to the Dogs Tonight
Alexandra Fuller, Random House, $15, 9780375758997

41. Clark Howard's Living Large in Lean Times
Clark Howard, Avery, $18, 9781583334331

42. The Memory Palace
Mira Bartok, Free Press, $15, 9781439183328

43. Guns, Germs, and Steel
Jared Diamond, Norton, $18.95, 9780393317558

44. Night
Elie Wiesel, FSG, $9.95, 9780374500016

45. A People's History of the United States
Howard Zinn, Harper, $18.99, 9780060838652

46. The Last Stand
Nathaniel Philbrick, Penguin, $18, 9780143119609

47. Prevent and Reverse Heart Disease
Caldwell B. Esselstyn, Jr., Avery, $17, 9781583333006

48. Yoga Bitch
Suzanne Morrison, Three Rivers Press, $15, 9780307717443

49. Drive
Daniel H. Pink, Riverhead, $16, 9781594484803

50. Food Rules
Michael Pollan, Penguin, $11, 9780143116387