MLA
Chase-Riboud, Barbara. Telegram Sent by Barbara Chase-Riboud (Paris, France) to Her Mother, Vivian May Chase (Philadelphia, Pennsylvania), Announcing the New House Barbara Chase-Riboud and Her Husband, Marc Riboud, Purchased - July 14, 1963. 1963. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 3. https://digital.library.emory.edu/purl/764gmsbd8n-cor.
APA, 6th edition
Chase-Riboud, B. (1963). Telegram sent by Barbara Chase-Riboud (Paris, France) to her mother, Vivian May Chase (Philadelphia, Pennsylvania), announcing the new house Barbara Chase-Riboud and her husband, Marc Riboud, purchased - July 14, 1963 (Box 1, Folder 3) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/764gmsbd8n-cor.
Chicago
Chase-Riboud, Barbara. “Telegram Sent by Barbara Chase-Riboud (Paris, France) to Her Mother, Vivian May Chase (Philadelphia, Pennsylvania), Announcing the New House Barbara Chase-Riboud and Her Husband, Marc Riboud, Purchased - July 14, 1963.” Letters (correspondence). Barbara Chase-Riboud Papers, 1963. Box 1, Folder 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/764gmsbd8n-cor.