Author Last Name
O'Connor, Doris 82 Books 16 Series
O'Dare, Deirdre 92 Books 2 Series
O'Gara, Rayne 17 Books 2 Series
O'Malley, Tierney 17 Books 2 Series
O'Quinn, Erin 54 Books 9 Series
O'Reilly, Terry 64 Books 1 Series
Obayani, Kambon 12 Books 1 Series
Oh, Madeleine 27 Books 2 Series
Okati, Willa 147 Books 7 Series
Oliver, Amelia 13 Books 2 Series
Olivia, R.M. 7 Books 1 Series
Olsen, Xya 14 Books 2 Series
Olson, Jodi 53 Books 1 Series
Ortega, Frey 24 Books 6 Series
Otto, Jay 12 Books 2 Series
Owen, Chris; Payne, Jodi 6 Books 1 Series
Owens, Lisa M. 6 Books 3 Series