The Evolution of Dodd's Sister is a companion book to The Evolution of Dodd, both published by Rand McNally in 1897. Just as Dodd discussed proper means of educating boys, Dodd's Sister turns the attention to the upbringing of girls.
W. W. Denslow's cover for Dodd's Sister is clearly designed to accompany his cover for Dodd. The same colors of teal, gray and white are used, as well as the same layout with a band of color at the top and a single child in the lower portion.
These two books were clearly meant to be a pair, but it's fun to see that The Romance of a Child (also from 1897) was designed in very much the same manner. It fits together nicely with these titles to create a trio of covers.