Based on sales for the week ending December 16, 2012

16. Guinness World Records 2013
Guinness, $28.95, 9781904994879

17. Roll Me Up and Smoke Me When I Die
Willie Nelson, Morrow, $22.99, 9780062193643

18. Far From the Tree
Andrew Solomon, Scribner, $37.50, 9780743236713

19. Darth Vader and Son
Jeffrey Brown, Chronicle, $14.95, 9781452106557

20. No Easy Day
Mark Owen, Dutton, $26.95, 9780525953722

21. Dogfight
Calvin Trillin, Random House, $16, 9780812993684

22. Short Nights of the Shadow Catcher
Timothy Egan, Houghton Mifflin Harcourt, $28, 9780618969029

23. Underwater Dogs
Seth Casteel, Little Brown, $19.99, 9780316227704

24. The Onion Book of Known Knowledge
Little Brown, $29.99, 9780316133265

25. How Music Works
David Byrne, McSweeney's, $32, 9781936365531

26. Hallucinations
Oliver Sacks, Knopf, $26.95, 9780307957245

27. Why Does the World Exist?
Jim Holt, Liveright, $27.95, 9780871404091

28. Building Stories
Chris Ware, Pantheon, $50, 9780375424335

29. Bruce
Peter Ames Carlin, Touchstone, $28, 9781439191828

30. Tap Dancing to Work
Carol Loomis, Portfolio, $27.95, 9781591845737

31. Jerusalem: A Cookbook
Yotam Ottolenghi, Sami Tamimi, Ten Speed Press, $35, 9781607743941

32. The Generals
Thomas E. Ricks, Penguin Press, $32.95, 9781594204043

33. Fifty Shades of Chicken
F.L. Fowler, Clarkson Potter, $19.99, 9780385345224

34. Elsewhere
Richard Russo, Knopf, $25.95, 9780307959539

35. The Mini Minimalist
Mark Bittman, Clarkson N Potter, $19.95, 9780307985552

36. The End of Your Life Book Club
Will Schwalbe, Knopf, $25, 9780307594037

37. The Big New Yorker Book of Dogs
The New Yorker Magazine, Random House, $45, 9780679644750

38. My Bookstore
Ronald Rice (Ed.), Black Dog & Leventhal, $23.95, 9781579129101

39. Grace
Grace Coddington, Random House, $35, 9780812993356

40. Quiet
Susan Cain, Crown, $26, 9780307352149

41. Because I Said So!
Ken Jennings, Scribner, $19.99, 9781451656251

42. The Science of Good Cooking
Guy Crosby, America's Test Kitchen, $40, 9781933615981

43. Goodnight iPad
Ann Droyd, Blue Rider, $14.95, 9780399158568

44. Who I Am
Pete Townshend, Harper, $32.50, 9780062127242

45. Plenty
Yotam Ottolenghi, Chronicle, $35, 9781452101248

46. Heads in Beds
Jacob Tomsky, Doubleday, $25.95, 9780385535632

47. Antifragile
Nassim Nicholas Taleb, Random House, $30, 9781400067824

48. Go the F**k to Sleep
Adam Mansbach, Ricardo Cortes (Illus.), Akashic, $14.95, 9781617750250

49. Charlie Brown's Christmas Stocking
Charles M. Schulz, Fantagraphics, $9.99, 9781606996249

50. My Ideal Bookshelf
Thessaly La Force (Ed.), Little Brown, $24.99, 9780316200905