Final answer:
The provided reference materials do not include the name of the first known African American to graduate from the National School of Chiropractic in 1913.
Step-by-step explanation:
The first known African American to graduate from the National School of Chiropractic in 1913 is not mentioned in the provided materials. However, during that period, there were significant advancements and firsts for African Americans in various medical fields. For example, Dr. Solomon Carter Fuller became the nation's first Black psychiatrist in 1897, and in 1912, he published the first major study of Alzheimer's disease in the U.S. Moreover, Ida Gray Nelson Rollins was the first female African American doctor of dentistry, graduating in 1890. Other pioneers include James McCune Smith, the first African American to earn a formal medical degree, and Rebecca Lee Crumpler, the first African American woman to complete a doctorate in medicine in 1864.