Sisters, Schoolgirls, and Sleuths

Girls series books have been popular since the early 1840s, when books about Cousin Lucy, a young girl who learns about the world around her, first appeared. Since then, scores of series books have followed, several of them highly successful, and featuring some of the most enduring characters in fiction, such as Nancy Drew. In recent decades, series books like The Baby-Sitters Club and Sweet Valle...