Addressees: Millet, Francis D
- Olivia Susan (Susy) Clemens to Francis D. Millet, March 1877 · Hartford, Conn · UCCL01401
- Samuel L. Clemens to Francis D. Millet, 7 August 1877 · Elmira, N.Y · UCCL01468
- SLC to Francis D. Millet, 30 or 31 March 1879, Paris, France · UCCL13942
- SLC to Frank D. Millet, 19 April 1879 · Paris, France · UCCL14128
- Samuel L. Clemens to Francis D. and Elizabeth M. Millet, 4 February 1880 · Hartford, Conn · UCCL12652
- SLC to Francis D. Millet, 29 September 1893 · New York, N.Y · UCCL11623
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