 McKissack went on to write many more biographies, some with Fredrick and some by herself, about prominent African American figures, including Frederick Douglass, Langston Hughes, and Sojourner Truth.McKissack wrote mostly non-fiction and focused on issues such as racism and African American history.She wrote several non-fiction books before her first picture book, "Flossie & the Fox," was eventually published in 1986 at Dial Press.