Our Friday story about the publicity garnered by Chris Nowinski, author of Head Games: Football's Concussion Crisis from the NFL to Youth Leagues  (Drummond Publishing, $14.95, 9781597630139/1597630136), misstated the book's distributor. It is Biblio, not NBN. Biblio is a sister company of NBN that specializes in distributing small trade publishers. Our apologies.