Complex sentence: Peterkin sent highly assertive letters to people she did not know and had never met, such as Carl Sandburg and H.L. Mencken, and included samples of her writing about the Gullah culture of coastal South Carolina.
Split into simpler sentences: Peterkin sent highly assertive letters to people she did not know and had never met. For instance, she wrote to authors Carl Sandburg and H.L. Mencken, and included samples of her writing about the Gullah culture of coastal South Carolina.