MLA
Smith, Norman C. Letter from Norman C. Smith, Vice President of Development and Planning at Emory University, to Don L. Bosseau, Director of Libraries at Emory University, Handing over Materials That Norman Smith and His Team Gathered Regarding the Student Demonstrations at Emory between May 25th and 28th, 1969. 1976. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 1. https://digital.library.emory.edu/purl/873pvmcw83-cor.
APA, 6th edition
Smith, N. C. (1976). Letter from Norman C. Smith, Vice President of Development and Planning at Emory University, to Don L. Bosseau, Director of Libraries at Emory University, handing over materials that Norman Smith and his team gathered regarding the student demonstrations at Emory between May 25th and 28th, 1969 (Box 2, Folder 1) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/873pvmcw83-cor.
Chicago
Smith, Norman C. “Letter from Norman C. Smith, Vice President of Development and Planning at Emory University, to Don L. Bosseau, Director of Libraries at Emory University, Handing over Materials That Norman Smith and His Team Gathered Regarding the Student Demonstrations at Emory between May 25th and 28th, 1969.” Letters (correspondence). Emory University Desegregation Collection, 1976. Box 2, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/873pvmcw83-cor.