Addressees: Harte, Bret
- Samuel L. Clemens to Francis Bret Harte, 1 May 1867 · New York, N.Y · UCCL00128 CtY-BR
- Samuel L. Clemens to Bret Harte, 7 June–28 September 1871 · Elmira, N.Y · UCCL11811 NN5, CU-MARK
- Samuel L. Clemens to Francis Bret Harte, 13 July 1875 · Hartford, Conn · UCCL11978 CaONOra2
- Samuel L. Clemens to Bret Harte, 7–11 September 1876 New York, N.Y. or Hartford, Conn · UCCL13034
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