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O'hearn (General Nonfiction) Alexandra O'Hurley (Romance, Erotica) Richard O'Kane (History) Allan O'Keefe (Horror) Bobbie O'Keefe (Romance) Kerrie O'Keefe (Erotica) Molly O'Keefe (Romance) Susan Heyboer O'Keefe (Mainstream, Spiritual/Religion, Children's Fiction) Michael O'Keeffe (Sports/Entertainment) Gene O'Kelly (Self Improvement) Janeen O'Kerry (Romance) Diane O'Key (Romance) Ryan O'Leary (Erotica) Laura O'Leone (Romance) Tierney O'Malley (Romance, Erotica) Alex O'Meara (Mainstream) Stewart O'Nan (Mainstream, Sports/Entertainment, History) Barbara O'Neal (Mainstream, Romance) Eilis O'Neal (Young Adult) Eugenia O'Neal (Historical Fiction) Rory O'Neal (Erotica) Brian O'Neil (Sports/Entertainment) Heather O'Neil (Children's Fiction) William J. 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