Correspondence, legal and financial papers, and photographs document the personal relationships and professional activities of Rosser, a successful single African-American businesswoman. Correspondence, 1920s-1940s, pertains to Rosser's business ventures in regard to the management of her rental property in Lynchburg, Va., and Durham, N.C.; personal loans made to family and friends during the Depression; and her investments in government stocks and bonds. Later correspondence centers around her relationships with her foster daughter and her niece. Family photographs date back to ca. 1860s and include snapshots of Rosser and her friends in the 1920s and her daughter's family in Fresno, Calif., in the 1960s.