Sadie Tanner Mossell Alexander was a pioneering Black professional and civil rights activist of the early-to-mid-20th century. In 1921, Mossell Alexander was the first African-American woman to receiv
Nathan Francis Mossell was an American physician who was the first African-American graduate of the University of Pennsylvania School of Medicine in 1882. He did post-graduate training at hospitals in
Frederick Douglass Memorial Hospital which Nathan Mossell helped found in 1895