MLA
Saunders, L. M., and Bro. Contract for Lease of House between William H. Scott, Sr. and L. M. Saunders, October 1, 1886. 1886. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 9. https://digital.library.emory.edu/purl/873pvmcwxf-cor.
APA, 6th edition
Saunders, L. M., & B. (1886). Contract for lease of house between William H. Scott, Sr. and L. M. Saunders, October 1, 1886 (Box 1, Folder 9) [Contracts]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/873pvmcwxf-cor.
Chicago
Saunders, L. M., and Bro. “Contract for Lease of House between William H. Scott, Sr. and L. M. Saunders, October 1, 1886.” Contracts. William H. Scott Family Papers, 1848-1982, 1886. Box 1, Folder 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/873pvmcwxf-cor.