Book clubs grow up Has One on book clubs.

They say meetings tend to be informal affairs, but a growing number are far more sophisticated. Members of the Sophia book club in Indianapolis, for instance, pay dues and elect a board. A few times a year, their discussions include the book’s author, and this summer, a handful of members will attend a national conference in Atlanta.

Bolstered by the success of “One Book, One City” and Oprah Winfrey, who is bringing back her club with a new focus on the classics, local clubs throughout the country are flexing newfound muscle.