Became the first African American woman to earn a PhD in economics in the United States, awarded by the University of Pennsylvania.
On June 15, 1921, Sadie Tanner Mossell was awarded her Doctor of Philosophy in Economics from the University of Pennsylvania, becoming the first African American woman in United States history to earn a PhD in economics. Her dissertation, titled "The Standard of Living Among One Hundred Negro Migrant Families in Philadelphia," examined the economic conditions of Black families who had moved north during the Great Migration.
This achievement was extraordinary given the era's deep barriers to both women and African Americans in higher education, let alone in the male-dominated discipline of economics. Few universities admitted Black students at all, and fewer still admitted Black women to doctoral programs. Mossell's success at Penn demonstrated exceptional intellectual capability and opened a door that had been firmly shut to women of her race.
Despite this historic accomplishment, she found that the economics profession offered her no employment opportunities befitting her credentials—a stark illustration of the era's combined racism and sexism. This rejection ultimately steered her toward law, where she would achieve further historic firsts. Her doctoral work nonetheless remains a landmark in the history of American economics and a foundational moment for Black women's participation in the discipline, later commemorated by organizations such as the Sadie Collective, founded in her honor to support Black women in economics.