Roberta Edwards; illustrated by John O'Brien. by Roberta Edwards ; illustrated by John O'Brien. by Roberta Edwards ; illustrated by True Kelley. by Roberta Edwards ; illustrated by Stephen Marchesi. by Gail Herman ; illustrated by John O'Brien. by Megan Stine ; illustrated by John O'Brien. by Avery Reed ; illustrated by John O'Brien. by Bonnie Bader ; illustrated by John O'Brien. by David A. Adler ; illustrated by John O'Brien. by Margaret Frith ; illustrated by John O'Brien.