Viewers have criticized the lack of characters of color in Marvel's Agent Carter -- K. Tempest Bradford says it's just one of a long line of properties that overlook the presence of African-Americans outside of slavery, Reconstruction and the civil rights era. Kelsey McNeal/ABC hide caption

itoggle caption Kelsey McNeal/ABC

Harper Lee, seen here receiving the Presidential Medal of Freedom in 2007, actually wrote Go Set a Watchman first. But she set it aside when her editor suggested focusing on Scout's flashbacks instead — and she did, in what became To Kill a Mockingbird. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

In Dan Santat's The Adventures of Beekle, an imaginary friend sets out to find a child who needs him. Courtesy of Little Brown and Company Books for Young Readers hide caption

itoggle caption Courtesy of Little Brown and Company Books for Young Readers