This dissertation explores Black South American women and girls' epistolary tradition. Drawing on Black Feminist methodologies and decolonial theoretical frameworks/theoretical traditions, I analyze the intersections of race, class, gender, and sexuality and their effects on the creation, preservation, and analyses of Black women's early written production. Specifically, I center my analysis on bodies of literature composed of letters written by enslaved people alongside legal documents caused by Spanish colonial authorities. I explore the records of an enslaved Black woman produced in the context of lawsuits, legal battles, and cases of emancipation in the New Kingdom of Granada and the Viceroyalty of New Granada during the seventeenth and eighteenth centuries. I argue that the study of these often-overlooked documents contributes to the current conversations on the future of African studies, Black feminisms, Black women's literary production, Black anticolonial feminisms, and Black historiographies by shedding light on early written documents by enslaved women. This work highlights the importance of exploring these extensive bodies of literature and continuing to advance methodologies for analyzing this material by reading against the grain of the Trans-Atlantic colonial archives.