Provided as a suggestion only. Please verify these automated citations against the guidelines of your preferred style.

Envelope addressed to Mr. Thornton[?]

MLA

Envelope Addressed to Mr. Thornton[?]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 6, Folder 53. https://digital.library.emory.edu/purl/433dz08mf1-cor.

APA, 6th edition

Envelope addressed to Mr. Thornton[?] (Box 6, Folder 53). [Envelopes]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08mf1-cor.

Chicago

“Envelope Addressed to Mr. Thornton[?].” Envelopes. Civil War Collection, n.d. Box 6, Folder 53. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08mf1-cor.