Addressees: Winter, William
- Samuel L. Clemens to William Winter, 5 December 1879 · Hartford, Conn · UCCL01734
- SLC to William Winter, 5 November 1890 · Hartford, Conn · UCCL08604
- SLC to William Winter, December 1901 · Riverdale, N.Y · UCCL10367
- SLC to William Winter, 8 December 1901 · Riverdale, N.Y · UCCL06185
- OLC to William Winter, 15 February 1902 · Riverdale, N.Y · UCCL08876
- OLC to William Winter, 14 March 1902 · Riverdale, N.Y · UCCL08877
- SLC to William Winter, 28 April 1903 · Riverdale, N.Y · UCCL06639
- SLC to William Winter, 14 October 1903 · New York, N.Y · UCCL13113
- SLC to William Winter, 20 July 1904 · Lee, Mass · UCCL06892
- SLC to William Winter, 7 July 1905 · Dublin, N.H · UCCL07078
- SLC to William Winter, 7–13 October 1909 · Redding, Conn · UCCL12002
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