MLA
Thompson, O. E. Statement of Account with Payment Owed by Henry S. Boutell to Dr. O. E. Thompson for Services Provided. 1876. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19, Folder 8. https://digital.library.emory.edu/purl/53976hdsdn-cor.
APA, 6th edition
Thompson, O. E. (1876). Statement of account with payment owed by Henry S. Boutell to Dr. O. E. Thompson for services provided (Box 19, Folder 8) [Receipts (financial records)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/53976hdsdn-cor.
Chicago
Thompson, O. E. “Statement of Account with Payment Owed by Henry S. Boutell to Dr. O. E. Thompson for Services Provided.” Receipts (financial records). Civil War Collection, 1876. Box 19, Folder 8. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/53976hdsdn-cor.