Addressees: Riley, John H
- SLC to John H. Riley, 1 May 1867–26 February 1868 · New York, N.Y., or Washington, D.C · UCCL12616
- Samuel L. Clemens to John Henry Riley, 27 or 28 November 1870 · Buffalo, N.Y · UCCL11820
- Samuel L. Clemens to John Henry Riley, 2 December 1870 · Buffalo, N.Y · UCCL00547
- Samuel L. Clemens to John Henry Riley, 3 March 1871 · Buffalo, N.Y · UCCL00582
- Samuel L. Clemens to John Henry Riley, 27 March 1871 · Elmira, N.Y · UCCL00597
- Samuel L. Clemens to John Henry Riley, 9 October 1871 · Hartford, Conn · UCCL02458
- Samuel L. Clemens to John Henry Riley, 4 January 1872 · Dayton, Ohio · UCCL00706
- Samuel L. Clemens to John Henry Riley, 27 March 1872 · Elmira, N.Y · UCCL00740
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