Between narrative chapters, Van Sertima develops his main claims about African contact with the Americas in an essay style and includes images of artifacts, which primarily consist of photographs of ceramic heads that Van Sertima says have African features. Van Sertima also includes photos of an African man and woman for comparison, but he does not include pictures of inhabitants of the area where the artifacts were found. Van Sertima focuses specifically on the Olmec colossal heads, saying that the characteristics of the stone faces are "indisputably" African, while Mesoamerican experts such as Richard Diehl disregards this claim, as the statues are stylized and generally accepted as representing native Mesoamericans.