MLA
Dobbs, John Wesley, 1882-1961. Letter from John Wesley Dobbs to Richard H. Rich, President of Rich's department stores, ending his business relationship with Rich's department store because of the stores lack of movement to ending segregation - September 16, 1960. September 16, 1960. Richard H. Rich Papers, 1902-1981. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx9mx-cor.
APA, 6th edition
Dobbs, John Wesley, 1882-1961. (September 16, 1960)[Letter from John Wesley Dobbs to Richard H. Rich, President of Rich's department stores, ending his business relationship with Rich's department store because of the stores lack of movement to ending segregation - September 16, 1960]. Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx9mx-cor.
Chicago
Dobbs, John Wesley, 1882-1961, Letter from John Wesley Dobbs to Richard H. Rich, President of Rich's department stores, ending his business relationship with Rich's department store because of the stores lack of movement to ending segregation - September 16, 1960, September 16, 1960, Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx9mx-cor.