Addressees: Clark, Charles H
- Samuel L. Clemens to Charles H. Clark, 8 January 1876 · Hartford, Conn · UCCL12742
- Samuel L. Clemens to Charles H. Clark, 19? January 1878 · Hartford, Conn · UCCL01524
- Samuel L. Clemens to Charles H. Clark, 6 March 1880 · Hartford, Conn · UCCL08597
- SLC to Charles H. Clark, 24 June 1884 · Elmira, N.Y · UCCL02994
- SLC to Charles H. Clark, 9 November 1884 · Providence, R.I · UCCL12812
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