I really enjoy how this cover integrates the text with the tree. I am guessing the designer created the title text to look like an extension of the tree instead of just choosing from an existing font. The little girl is looking up to the bird, which shows the significance of the mockingbird without becoming overbearing.

We've spent a lot of time in class discussing whether something is time-period appropriate. I like this cover because it doesn't necessarily scream 1960s; the use of silhouettes allows the art to move from generation to generation (especially since it is the 50th anniversary edition).