Based on sales for the week ending May 29, 2011

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

17. The Tiger
John Vaillant, Vintage, $15, 9780307389046

18. Operation Mincemeat
Ben Macintyre, Broadway, $15, 9780307453280

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

20. The Sweet Life in Paris
David Lebovitz, Broadway, $14, 9780767928892

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

22. Role Models
John Waters, FSG, $15, 9780374532864

23. The Dirty Life
Kristin Kimball, Scribner, $15, 9781416551614

24. Hitch-22
Christopher Hitchens, Twelve, $14.99, 9780446540346

25. What the Dog Saw
Malcolm Gladwell, Back Bay, $16.99, 9780316076203

26. Gift From the Sea
Anne Morrow Lindbergh, Pantheon , $9.95, 9780679732419

27. The Beekeeper's Lament
Hannah Nordhaus, Harper Perennial, $14.99, 9780061873256

28. The Most Beautiful Walk in the World
John Baxter, Harper Perennial, $14.99, 9780061998546

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

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

31. Lone Survivor
Marcus Luttrell, Patrick Robinson, Back Bay, $15.99, 9780316067607

32. Messenger
Jeni Stepanek, New American Library, $15, 9780451231147

33. Crow Planet
Lyanda Lynn Haupt, Back Bay, $14.99, 9780316019118

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

35. Clean
Alejandro Junger, HarperOne, $14.99, 9780061735332

36. The Naked Roommate
Harlan Cohen, Sourcebooks, $14.99, 9781402253461

37. Packing for Mars
Mary Roach, Norton, $15.95, 9780393339918

38. Dance First. Think Later.
Kathryn Petras, Ross Petras, Workman, $8.95, 9780761161707

39. Blink
Malcolm Gladwell, Back Bay, $15.99, 9780316010665

40. Lunch in Paris
Elizabeth Bard, Back Bay, $13.99, 9780316042789

41. The King's Speech
Mark Logue, Peter Conradi, Sterling, $14.95, 9781402786761

42. Taking the Leap
Pema Chodron, Shambhala, $14, 9781590308431

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

44. The Lost Cyclist
David V. Herlihy, Mariner, $14.95, 9780547521985

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

46. Superfreakonomics
Steven D. Levitt, Stephen J. Dubner, Harper Perennial, $15.99, 9780060889586

47. Infinite City
Rebecca Solnit, Sandow Birk (Illus.), University of California Press, $24.95, 9780520262508

48. When Things Fall Apart
Pema Chodron, Shambhala, $14, 9781570623448

49. The River of Doubt
Candice Millard, Broadway, $15, 9780767913737

50. The Book of Awesome
Neil Pasricha, Berkley, $15, 9780425238905