Based on sales for the week ending December 30, 2012

16. Tiny Beautiful Things
Cheryl Strayed, Vintage, $14.95, 9780307949332

17. Arguably
Christopher Hitchens, Twelve, $18, 9781455502783

18. The Immortal Life of Henrietta Lacks
Rebecca Skloot, Broadway, $16, 9781400052189

19. The Devil in the White City
Erik Larson, Vintage, $16, 9780375725609

20. Outliers
Malcolm Gladwell, Back Bay, $16.99, 9780316017930

21. Jack Kennedy: Elusive Hero
Chris Matthews, S&S, $16.99, 9781451635096

22. The Happiness Project
Gretchen Rubin, Harper, $14.99, 9780061583261

23. How to Be a Woman
Caitlin Moran, Harper Perennial, $15.99, 9780062124296

24. Rin Tin Tin: The Life and the Legend
Susan Orlean, S&S, $16, 9781439190142

25. Steal Like an Artist
Austin Kleon, Workman, $10.95, 9780761169253

26. Just Kids
Patti Smith, Ecco, $16, 9780060936228

27. Destiny of the Republic
Candice Millard, Anchor, $16, 9780767929714

28. 1493
Charles C. Mann, Vintage, $16.95, 9780307278241

29. Born to Run
Christopher McDougall, Vintage, $15.95, 9780307279187

30. The Best American Essays 2012
David Brooks, Robert Atwan (Eds.), Mariner, $14.95, 9780547840093

31. Lady Almina and the Real Downton Abbey
The Countess of Carnarvon, Broadway, $15.99, 9780770435622

32. Boomerang
Michael Lewis, Norton, $16.95, 9780393343441

33. Holidays on Ice
David Sedaris, Back Bay, $10, 9780316078917

34. The Greater Journey
David McCullough, S&S, $20, 9781416571773

35. Below Stairs
Margaret Powell, St. Martin's Griffin, $14.99, 9781250023216

36. The Best American Science and Nature Writing 2012
Dan Ariely, Tim Folger (Eds.), Mariner, $14.95, 9780547799537

37. Turn Right at Machu Picchu
Mark Adams, Plume, $16, 9780452297982

38. Heaven Is for Real
Todd Burpo, Thomas Nelson, $16.99, 9780849946158

39. Guitar Zero
Gary Marcus, Penguin, $16, 9780143122784

40. Empire of the Summer Moon
S.C. Gwynne, Scribner, $16, 9781416591061

41. Moonwalking With Einstein
Joshua Foer, Penguin, $16, 9780143120537

42. The Best American Nonrequired Reading
Dave Eggers (Ed.), Mariner, $14.95, 9780547595962

43. 1491
Charles C. Mann, Vintage, $16.95, 9781400032051

44. The Hare With Amber Eyes
Edmund de Waal, Picador, $16, 9780312569372

45. To Heaven and Back
Mary C. Neal, Waterbrook, $14.99, 9780307731715

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

47. Portlandia: A Guide for Visitors
Fred Armisen, et al., Grand Central, $16.99, 9781455520589

48. The Untethered Soul
Michael A. Singer, New Harbinger, $16.95, 9781572245372

49. Zagat 2013 New York City Restaurants
Zagat, $15.95, 9781604785180

50. Blood, Bones & Butter
Gabrielle Hamilton, Random House, $16, 9780812980882