Sadie Tanner Mossell Alexander

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 receive a Ph.D. in economics. In 1927, she was the first Black woman to receive a law degree from the University of Pennsylvania Law School and went on to become the first Black woman to practice law in the state. She was also the first national president of Delta Sigma Theta sorority, serving from 1919 to 1923.