by Owen, Margaret, 1986-
by Oshiro, Mark
by O'Rourke, Meghan.
by O'Hara, Mary.
by Ostertag, Molly
by Ortega, Mirelle
by Pilkey, Dav, 1966-
by Roizen, Michael F.
by Krensky, Stephen.
by Raab, Brigitte.
by Hoblyn, Alison.