MLA
Rich, Richard H., 1901-1975. Letter from Richard H. Rich, President of Rich's department stores, to Maxine T. Webb, responding to the letter sent on March 24th, 1958, stating that the bathrooms designated for Black customers will be improved but that there are no plans on changing the locations of any restrooms - March 27, 1958. March 27, 1958. Richard H. Rich Papers, 1902-1981. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t20g-cor.
APA, 6th edition
Rich, Richard H., 1901-1975. (March 27, 1958)[Letter from Richard H. Rich, President of Rich's department stores, to Maxine T. Webb, responding to the letter sent on March 24th, 1958, stating that the bathrooms designated for Black customers will be improved but that there are no plans on changing the locations of any restrooms - March 27, 1958]. Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t20g-cor.
Chicago
Rich, Richard H., 1901-1975, Letter from Richard H. Rich, President of Rich's department stores, to Maxine T. Webb, responding to the letter sent on March 24th, 1958, stating that the bathrooms designated for Black customers will be improved but that there are no plans on changing the locations of any restrooms - March 27, 1958, March 27, 1958, Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t20g-cor.