APA (7th ed.) Citation

Carey, M., & Butler-Gunsaulus Collection. (1839). Autograph letter signed: N.p., to Smith, n.p.

Chicago Style (17th ed.) Citation

Carey, Mathew, and Butler-Gunsaulus Collection. Autograph Letter Signed: N.p., to Smith, N.p. 1839.

MLA (8th ed.) Citation

Carey, Mathew, and Butler-Gunsaulus Collection. Autograph Letter Signed: N.p., to Smith, N.p. 1839.

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