Nathaniel Horton prepares to deliver books throughout the building. The mailroom has received as many as 200 books in one day. Wayne Huang/NPR hide caption toggle caption Wayne Huang/NPR NPR Public Editor NPR & Books: No Hard and Fast Rules by Lori Grisham November 23, 2010 Nonfiction, fiction, summer must-haves & the year's best. How does NPR pick them? The Ombudsman Office takes a look at Books coverage.