Addressees: Osgood (J. R.) & Co
- Samuel L. Clemens to Fields, Osgood and Co., 28 November 1880 · Hartford, Conn · UCCL01859
- SLC to Osgood (J.R.) & Co., 23 May 1881 · Hartford, Conn · UCCL01959
- SLC to Osgood (J.R.) & Co., 16 June 1881 · Branford, Conn · UCCL01972
- SLC to Osgood (J.R.) & Co., 2 July 1881 · Branford, Conn · UCCL01980
- SLC to Osgood (J.R.) & Co., 6 August 1881 · Elmira, N.Y · UCCL09234
- SLC to Osgood (J.R.) & Co., 3–11 October 1881 · Hartford, Conn · UCCL12730
- SLC to Osgood (J.R.) & Co., 15 October 1881 · Hartford, Conn · UCCL02054
- SLC to Osgood (J.R.) & Co., 21 October 1881 · Hartford, Conn · UCCL08618
- SLC to Osgood (J.R.) & Co., 2 November 1881 · Hartford, Conn · UCCL12731
- SLC to Osgood (J.R.) & Co., 28 December 1881 · Hartford, Conn · UCCL02128
- SLC to Osgood (J.R.) & Co., 6 January 1883 · Hartford, Conn · UCCL02331
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