1. Ellen Irene Diggs Papers, Beulah Davis Research Room, Morgan State University Libraries. (EIDP, BDRR-MSU).
2. Fondo Fernando Ortiz, Biblioteca Nacional José Martí, Cuban Collection, Manuscripts Section. (FFO, BNJM).
3. W. E. B. Du Bois Papers (MS 312). Special Collections and University Archives, UMass Libraries. (WEB-DB-P, SCUA-UMass Libraries)