For reading groups in the Society, here are some sources of reading guides direct from the publishers:
Avon http://www.harpercollins.com
Ballantine http://www.randomhouse.com
Beacon http://www.houghtonmifflinbooks.com
DaCapo http://www.harpercollins.com
Doubleday http://www.randomhouse.com
Harcourt http://www.harcourtbrace.com
HarperCollins http://www.harpercollins.com
HarperPerennial http://www.harpercollins.com
Henry Holt http://www.henryholt.com
Houghton Mifflin http://www.houghtonmifflinbooks.com
Hyperion http://www.twbookmark.com
Knopf http://www.randomhouse.com
Little Brown http://www.twbookmark.com
Mariner http://www.houghtonmifflinbooks.com
Minotaur http://www.stmartins.com
Norton http://www.wwnorton.com
Owl http://www.henryholt.com
Palgrave http://www.stmartins.com
Penguin http://www.penguinputnam.com
Picador http://www.stmartins.com
Random House http://www.randomhouse.com
Scribner http://www.simonsays.com
Signet http://www.penguinputnam.com
Simon & Schuster http://www.simonsays.com
St. Martin’s http://www.stmartins.com
Viking http://www.penguinputnam.com
Vintage http://www.randomhouse.com
Warner http://www.twbookmark.com