Addressees: Parker, Edwin Pond
- Samuel L. Clemens to Edwin Pond Parker, 15 May 1880 · Hartford, Conn · UCCL01805 ViU
- Samuel L. Clemens to Edwin Pond Parker, 22? December 1880 · Hartford, Conn · UCCL01876 ViU
- Samuel L. Clemens to Edwin Pond Parker, 24 December 1880 · Hartford, Conn · UCCL02547 NN-BGC
- SLC to Edwin Pond Parker, 20 December 1881 · Hartford, Conn · UCCL10807 NN-BGC
- SLC to Edwin Pond Parker, 14 May–31 May 1883 · Hartford, Conn · UCCL11190 ODa2
- SLC to Edwin Pond Parker, 16 March 1885 · Hartford, Conn · UCCL11269 CtHMTH
- SLC to Edwin Pond Parker, 6 December 1886 · Hartford, Conn · UCCL03492 ViU
- SLC to Edwin Pond Parker, 2 August 1898 · Kaltenleutgeben, Austria · UCCL05418 ODa2
- SLC to Edwin Pond Parker, 14 October 1903 · New York, N.Y · UCCL06743 ViU
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