Based on sales for the week ending July 22, 2012

16. Yes, Chef
Marcus Samuelsson, Random House, $27, 9780385342605

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

18. Are You My Mother?
Alison Bechdel, Houghton Mifflin Harcourt, $22, 9780618982509

19. Drift
Rachel Maddow, Crown, $25, 9780307460981

20. Dream Team
Jack McCallum, Ballantine, $28, 9780345520487

21. Behind the Beautiful Forevers
Katherine Boo, Random House, $27, 9781400067558

22. Thinking, Fast and Slow
Daniel Kahneman, FSG, $30, 9780374275631

23. Barack Obama
David Maraniss, S&S, $32.50, 9781439160404

24. Mick
Christopher Andersen, Gallery, $27, 9781451661446

25. A Year Up
Gerald Chertavian, Viking, $26.95, 9780670023776

26. When Women Were Birds
Terry Tempest Williams, FSG, $23, 9780374288976

27. Days of Destruction, Days of Revolt
Chris Hedges, Joe Sacco (Illus.), Nation Books, $28, 9781568586434

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

29. Jesus Calling
Sarah Young, Integrity , $15.99, 9781591451884

30. The Price of Inequality
Joseph E. Stiglitz, Norton, $27.95, 9780393088694

31. Cronkite
Douglas Brinkley, Harper, $34.99, 9780061374265

32. Prague Winter
Madeleine Albright, Harper, $29.99, 9780062030313

33. Twilight of the Elites
Christopher Hayes, Crown, $26, 9780307720450

34. I Am a Pole (and So Can You!)
Stephen Colbert, Paul Hildebrandt (Illus.), Grand Central, $15.99, 9781455523429

35. The Swerve
Stephen J. Greenblatt, Norton, $26.95, 9780393064476

36. End This Depression Now!
Paul Krugman, Norton, $24.95, 9780393088779

37. Wheat Belly
William Davis, Rodale Press, $25.99, 9781609611545

38. It's the Middle Class, Stupid!
James Carville, Stan Greenberg, Blue Rider Press, $26.95, 9780399160394

39. The Mobile Wave
Michael Saylor, Vanguard, $25.99, 9781593157203

40. This Is How
Augusten Burroughs, St. Martin's, $24.99, 9780312563554

41. The Violinist's Thumb
Sam Kean, Little Brown, $25.99, 9780316182317

42. Eat and Run
Scott Jurek, Steve Friedman, Houghton Mifflin Harcourt, $26, 9780547569659

43. American Grown
Michelle Obama, Crown, $30, 9780307956026

44. Bringing Up Bébé
Pamela Druckerman, Penguin Press, $25.95, 9781594203336

45. The Tools
Phil Stutz, Barry Michels, Spiegel & Grau, $25, 9780679644446

46. Mrs. Kennedy and Me
Clint Hill, Gallery, $26, 9781451648447

47. It Worked For Me
Colin Powell, Harper, $27.99, 9780062135124

48. Gifts of the Crow
John Marzluff, Tony Angell, Free Press, $25, 9781439198735

49. The Art of Fermentation
Sandor Ellix Katz, Chelsea Green, $39.95, 9781603582865

50. The Admirals
Walter R. Borneman, Little Brown, $29.99, 9780316097840