1. Go Set a Watchman, by Harper Lee, Harper
2. All the Light We Cannot See, by Anthony Doerr, Scribner
3. The Girl on the Train, by Paula Hawkins, Riverhead
4. Armada, by Ernest Cline, Crown
5. The English Spy, by Daniel Silva, Harper
6. In the Unlikely Event, by Judy Blume, Knopf
7. The Nightingale, by Kristin Hannah, St. Martin's
8. Luckiest Girl Alive, by Jessica Knoll, S&S
9. The Little Paris Bookshop, by Nina George, Crown
10. To Kill a Mockingbird, by Harper Lee, Harper
11. Code of Conduct, by Brad Thor, Atria
12. Our Souls at Night, by Kent Haruf, Knopf
13. The Cartel, by Don Winslow, Knopf
14. Seveneves, by Neal Stephenson, Morrow
15. The President's Shadow, by Brad Meltzer, Grand Central
* Published Thursday, July 23, 2015 (for the sales week ended Sunday, July 19, 2015). Based on reporting from many hundreds of independent bookstores across the United States. For information on more titles, please visit IndieBound.org