APA (7th ed.) Citation

Greeley, H., & Butler-Gunsaulus Collection. (1855). Autograph letter signed: New York, to [William H.] Herndon, [Springfield, Ill.].

Chicago Style (17th ed.) Citation

Greeley, Horace, and Butler-Gunsaulus Collection. Autograph Letter Signed: New York, to [William H.] Herndon, [Springfield, Ill.]. 1855.

MLA (8th ed.) Citation

Greeley, Horace, and Butler-Gunsaulus Collection. Autograph Letter Signed: New York, to [William H.] Herndon, [Springfield, Ill.]. 1855.

Warning: These citations may not always be 100% accurate.