Sources: MH-H
- Unidentified American Publishing Company employee for SLC to Oliver Wendell Holmes, 15 September 1869 · Buffalo, N.Y · UCCL12512
- Samuel L. Clemens to Schuyler Colfax, 9 October 1869 · Elmira, N. Y · UCCL00362
- Samuel L. Clemens to James Redpath, 4 October 1870 · Fredonia, N.Y · UCCL00510
- Samuel L. Clemens to James Redpath, 12 November 1870 · Buffalo, N.Y · UCCL00532
- Samuel L. Clemens to Thomas Bailey Aldrich, 22 January 1871 · Buffalo, N.Y · UCCL00560
- Samuel L. Clemens to Thomas Bailey Aldrich, 27 January 1871 · Buffalo, N.Y · UCCL00567
- Samuel L. Clemens to James Redpath, 30 January 1871 · Buffalo, N.Y · UCCL00570
- Samuel L. Clemens to James Redpath, 22 February 1871 · Buffalo, N.Y · UCCL00580
- Samuel L. Clemens to James Redpath, 12 June 1871 · Elmira, N.Y · UCCL00616
- SLC to James Redpath, 28 June 1871 · Elmira, N.Y · UCCL00626
- Samuel L. Clemens to James Redpath, 28 June 1871 · Elmira, N.Y · UCCL00627
- Samuel L. Clemens to James Redpath, 11 December 1871 · Toledo, Ohio · UCCL00689
- Samuel L. Clemens to William Dean Howells per Telegraph Operator, 7 January 1872 · Wooster, Ohio · UCCL00707
- Samuel L. Clemens to James Redpath, 27 January 1872 · Hartford, Conn · UCCL00722
- Samuel L. Clemens to James Redpath and George L. Fall, 7 March 1872 · Hartford, Conn · UCCL00731
- Samuel L. Clemens to William Dean Howells, 18 March 1872 · Elmira, N.Y · UCCL00732
- Samuel L. Clemens to The Editor of the San Francisco Alta California, 3 December 1872 · Hartford, Conn · UCCL00837
- Samuel L. Clemens to Unidentified · UCCL10821
- Samuel L. Clemens to Adam Badeau, 15 June 1873 · London, England · UCCL00927
- Samuel L. Clemens to John L. Toole, per Charles Warren Stoddard, 10 December 1873 · London, England · UCCL00998
- Samuel L. Clemens to William Dean Howells, per Telegraph Operator, 3 March 1874 · Hartford, Conn · UCCL01059
- Samuel L. Clemens to William Dean Howells, per Telegraph Operator, 4 March 1874 · Hartford, Conn · UCCL01061
- Samuel L. Clemens to Lilian Aldrich, 9 March 1874 · Hartford, Conn · UCCL10843
- Samuel L. Clemens to Thomas Bailey Aldrich, 24 March 1874 · Hartford, Conn · UCCL01068
- Samuel L. Clemens to Thomas Bailey Aldrich, 25 March 1874 · Hartford, Conn · UCCL01069
- Samuel L. Clemens to William Dean Howells, 10 May 1874 · Elmira, N.Y · UCCL01088
- Samuel L. Clemens to William Dean Howells, 21 June 1874 · Elmira, N.Y · UCCL01102
- Samuel L. Clemens to Augustin Daly, 14 August 1874 · Elmira, N. Y · UCCL01116
- Samuel L. Clemens to William Dean Howells, 17 November 1874 · Hartford, Conn · UCCL01154
- Samuel L. Clemens to William Dean Howells, 25 November 1874 · Hartford, Conn · UCCL01155
- Samuel L. Clemens to William Dean Howells, 2 December 1874 · Hartford, Conn · UCCL01159
- Samuel L. Clemens to William Dean Howells, 11 December 1874 · Hartford, Conn · UCCL01164
- Samuel L. Clemens to H. O. Houghton and Company, 11 December 1874 · Hartford, Conn · UCCL11951
- Samuel L. Clemens to William Dean Howells, 14 December 1874 · Hartford, Conn · UCCL01165
- Samuel L. Clemens to Thomas Bailey Aldrich, 31 December 1874 · Hartford, Conn · UCCL01171
- Samuel L. Clemens to H. O. Houghton and Company, 5 January 1875 · Hartford, Conn · UCCL01173
- Samuel L. Clemens to H. O. Houghton and Company, 6 January 1875 · Hartford, Conn · UCCL01174
- Samuel L. Clemens to William Dean Howells, 12 January 1875 · Hartford, Conn · UCCL01178
- Samuel L. Clemens to James R. Osgood, 13 January 1875 · Hartford, Conn · UCCL01179
- Samuel L. Clemens to William Dean Howells, 15 January 1875 · Hartford, Conn · UCCL01180
- Samuel L. Clemens to John L. Toole, 16 January 1875 · Hartford, Conn · UCCL01181
- Samuel L. Clemens to James R. Osgood, 12 February 1875 · Hartford, Conn · UCCL01193
- Samuel L. Clemens to H. O. Houghton and Company, 12 February 1875 · Hartford, Conn · UCCL01192
- Samuel L. Clemens to William Dean Howells, 20 February 1875 · Hartford, Conn · UCCL01195
- Samuel L. Clemens to William Dean Howells, 2 March 1875 · Hartford, Conn · UCCL01203
- Samuel L. Clemens to William Dean Howells, 16 March 1875 · Hartford, Conn · UCCL01208
- Samuel L. Clemens to William Dean Howells, 25 or 26 April 1875 · Hartford, Conn · UCCL01225
- Samuel L. Clemens to William Dean Howells, 7 May 1875 · Hartford, Conn · UCCL01230
- Samuel L. Clemens to William Dean Howells, 12 May 1875 · Hartford, Conn · UCCL01232
- Samuel L. Clemens to William Dean Howells, 22 May 1875 · Hartford, Conn · UCCL01235
- Samuel L. Clemens to William Dean Howells, 7 June 1875 · Hartford, Conn · UCCL01239
- Samuel L. Clemens to William F. Gill, 8 June 1875 · Hartford, Conn · UCCL01241
- Samuel L. Clemens to William Dean Howells, 21 June 1875 · Hartford, Conn · UCCL01242
- Samuel L. Clemens to James R. Osgood, 13 July 1875 · Hartford, Conn · UCCL01249
- Samuel L. Clemens to James R. Osgood, 23 July 1875 · Hartford, Conn · UCCL01254
- Samuel L. Clemens to James R. Osgood, 16 August 1875 · Newport, R.I · UCCL01257
- Samuel L. Clemens to William Dean Howells, 14 September 1875 · Hartford, Conn · UCCL01261
- Samuel L. Clemens to William Dean Howells, 18 September 1875 · Hartford, Conn · UCCL02493
- Samuel L. Clemens to James Redpath, 22 September 1875 · Hartford, Conn · UCCL01264
- Samuel L. Clemens to William Dean Howells, 22 and 27 September 1875 · Hartford, Conn · UCCL01263
- Samuel L. Clemens to William Dean Howells, 27 October 1875 · Hartford, Conn · UCCL01277
- Samuel L. Clemens to James R. Osgood, 17 January 1876 · Hartford, Conn · UCCL01298
- Samuel L. Clemens to James R. Osgood, 25 January 1876 · Hartford, Conn · UCCL01302
- Samuel L. Clemens to William Dean Howells, 13 March 1876 · Hartford, Conn · UCCL01329
- Samuel L. Clemens to Augustin Daly, 4 May 1876 · Hartford, Conn · UCCL01330
- Samuel L. Clemens to William Dean Howells, 12 and 14 May 1876 · Hartford, Conn · UCCL01333
- Samuel L. Clemens to William Dean Howells, 21 September 1876 · Hartford, Conn · UCCL01367
- Samuel L. Clemens to William Dean Howells, 12 October 1876 · Hartford, Conn · UCCL01375
- Samuel L. Clemens to William Dean Howells per Telegraph Operator, 8 November 1876 · Hartford, Conn · UCCL01387
- Samuel L. Clemens to William Dean Howells, per Telegraph Operator, 9 November 1876 · Hartford, Conn · UCCL01388
- Samuel L. Clemens to William Dean Howells, 26 November 1876 · Hartford, Conn · UCCL01389
- Samuel L. Clemens to William Dean Howells, 5 December 1876 · Hartford, Conn · UCCL01392
- Samuel L. Clemens to William Dean Howells, 26 February 1877 · Hartford, Conn · UCCL01311
- Samuel L. Clemens to William Dean Howells, 23? March 1877 · Hartford, Conn · UCCL01185
- Samuel L. Clemens to William Dean Howells, 19 April 1877 · Hartford, Conn · UCCL01413
- Samuel L. Clemens to William Dean Howells, 27 April 1877 · Baltimore, Md · UCCL01419
- Samuel L. Clemens to William Dean Howells, 6 June 1877 · Hartford, Conn · UCCL01439
- Samuel L. Clemens to William Dean Howells, 14 June 1877 · Elmira, N.Y · UCCL01441
- Samuel L. Clemens to William Dean Howells, 4 and 6 July 1877 · Elmira, N.Y · UCCL02511
- Samuel L. Clemens to William Dean Howells, 15 October 1877 · Hartford, Conn · UCCL01496
- Samuel L. Clemens to Elinor M. Howells, 26 October? 1877 · Hartford, Conn · UCCL10846
- Samuel L. Clemens to William Dean Howells, 1 November 1877 · Hartford, Conn · UCCL01501
- SLC to Ralph Waldo Emerson, Henry Wadsworth Longfellow, and Oliver Wendell Holmes, 27 December 1877 · Hartford, Conn · UCCL01184
- Samuel L. Clemens to William Dean Howells, 4 January 1878 · Hartford, Conn · UCCL01522
- Samuel L. Clemens to William Dean Howells and Elinor M. Howells, 26 February 1878 · Hartford, Conn · UCCL02522
- Samuel L. Clemens to William Dean Howells, 15 March 1878 · Hartford, Conn · UCCL01543
- Samuel L. Clemens to William Dean Howells, 23 March 1878 · Hartford, Conn · UCCL01548
- Samuel L. Clemens to William Dean Howells, 27 June 1878 · Heidelberg, Germany · UCCL01573
- Samuel L. Clemens to William Dean Howells, 27 September 1878 · Venice, Italy · UCCL01597
- Samuel L. Clemens to William Dean Howells, 30 January 1879 · Munich, Germany · UCCL01625
- Samuel L. Clemens to William Dean Howells, 2 February 1879 · Munich, Germany · UCCL01626
- Samuel L. Clemens to William Dean Howells, 15 April 1879 · Paris, France · UCCL01568
- SLC to William Dean Howells, 8 September 1879 · Elmira, N.Y · UCCL01687
- Samuel L. Clemens to William Dean Howells, 1? October 1879 · Elmira, N.Y · UCCL01695
- Samuel L. Clemens to William Dean Howells, 27 October 1879 · Hartford, Conn · UCCL01700
- Samuel L. Clemens to Thomas Bailey Aldrich, 7 November 1879 · Hartford, Conn · UCCL01709
- Samuel L. Clemens to William Dean Howells, 17 November 1879 · Hartford, Conn · UCCL01718
- Samuel L. Clemens to William Dean Howells, 23 November 1879 · Hartford, Conn · UCCL01724
- Samuel L. Clemens to William Dean Howells, 27 November 1879 · Hartford, Conn · UCCL01727
- Samuel L. Clemens to William Dean Howells, 9 December 1879 · Hartford, Conn · UCCL01736
- Samuel L. Clemens to William Dean Howells, 10 December 1879 · Hartford, Conn · UCCL01738
- Samuel L. Clemens to Thomas Bailey Aldrich, 8 January 1880 · Hartford, Conn · UCCL01752
- Samuel L. Clemens to William Dean Howells, 24 January 1880 · Elmira, N.Y · UCCL01756
- Samuel L. Clemens to William Dean Howells, 5 March 1880 · Hartford, Conn · UCCL01767
- Samuel L. Clemens to William Dean Howells, 24 March 1880 · Hartford, Conn · UCCL01774
- Samuel L. Clemens and Olivia L. Clemens to William Dean Howells, 1 April 1880 · Hartford, Conn · UCCL01779
- Samuel L. Clemens to William Dean Howells, 12? April 1880 · Hartford, Conn · UCCL01784
- Samuel L. Clemens to William Dean Howells, 19 and 20 April 1880 · Hartford, Conn · UCCL01785
- Samuel L. Clemens to William Dean Howells, 22 April 1880 · Hartford, Conn · UCCL01790
- Samuel L. Clemens to William Dean Howells, 23 April 1880 · Hartford, Conn · UCCL01793
- Samuel L. Clemens to William Dean Howells, 29 April 1880 · Hartford, Conn · UCCL01795
- Samuel L. Clemens to William Dean Howells, 18 May 1880 · Hartford, Conn · UCCL01806
- Samuel L. Clemens to William Dean Howells, 9 June 1880 · 2nd of 2 · Hartford, Conn · UCCL02812
- Samuel L. Clemens to William Dean Howells, 10? June 1880 · Hartford, Conn · UCCL10857
- Samuel L. Clemens to William Dean Howells, 15 June 1880 · Hartford, Conn · UCCL01812
- Samuel L. Clemens to William Dean Howells, 26 July 1880 · Elmira, N.Y · UCCL01819
- Samuel L. Clemens to William Dean Howells, 1 August 1880 · Elmira, N.Y · UCCL01820
- Samuel L. Clemens to William Dean Howells, 9 August 1880 · Elmira, N.Y · UCCL01821
- Samuel L. Clemens to Elinor M. Howells, 17 August 1880 · Elmira, N.Y · UCCL01825
- Samuel L. Clemens to William Dean Howells, 3 September 1880 · Elmira, N.Y · UCCL01829
- Samuel L. Clemens to William Dean Howells, 13 October 1880 · Hartford, Conn · UCCL01840
- Samuel L. Clemens to William Dean Howells, per Telegraph Operator, 15 October 1880 · Boston, Mass · UCCL01842
- Samuel L. Clemens to William Dean Howells, 19 October 1880 · Hartford, Conn · UCCL01843
- Samuel L. Clemens to William Dean Howells, 28 October 1880 · Hartford, Conn · UCCL01848
- Samuel L. Clemens to William Dean Howells, 30 October 1880 · Hartford, Conn · UCCL01850
- Samuel L. Clemens to James Osgood, 26 November 1880 · Hartford, Conn · UCCL01856
- Samuel L. Clemens to William Dean Howells, 14 January 1881 · Hartford, Conn · UCCL01892
- SLC to James R. Osgood, 23 January 1881 · Hartford, Conn · UCCL01895
- SLC to William D. Howells, 4 February 1881 · Hartford, Conn · UCCL01906
- SLC to James R. Osgood, 12 February 1881 · Hartford, Conn · UCCL01907
- SLC to William D. Howells, 15 February 1881 · Hartford, Conn · UCCL01908
- SLC to William D. Howells, 3 March 1881 · Hartford, Conn · UCCL01921
- SLC to William D. Howells, 4 March 1881 · Hartford, Conn · UCCL01922
- SLC to James R. Osgood, 7 March 1881 · Hartford, Conn · UCCL01924
- SLC to James R. Osgood, 9–10 March 1881 · Hartford, Conn · UCCL08970
- SLC to James R. Osgood, 26 March 1881 · Hartford, Conn · UCCL01931
- SLC to William D. Howells, 19 April 1881 · Hartford, Conn · UCCL01937
- SLC to William D. Howells, 12 August 1881 · Elmira, N.Y · UCCL02001
- SLC to William D. Howells, 18 August 1881 · Elmira, N.Y · UCCL02009
- SLC to James R. Osgood, 22 August 1881 · Elmira, N.Y · UCCL02011
- SLC to Charles E. Norton, 30 August 1881 · Elmira, N.Y · UCCL02018
- SLC to William D. Howells, 3 September 1881 · Elmira, N.Y · UCCL02023
- SLC to William D. Howells, 5 September 1881 · Elmira, N.Y · UCCL02027
- SLC to Thomas Bailey Aldrich, 19 September 1881 · Elmira, N.Y · UCCL02037
- SLC to William D. Howells, 15 October 1881 · Hartford, Conn · UCCL02053
- SLC to James R. Osgood, 1 November 1881 · Hartford, Conn · UCCL02079
- SLC to Thomas Bailey Aldrich, 2 November 1881 · Hartford, Conn · UCCL02080
- SLC to Elinor M. Howells, 25 November 1881 · Hartford, Conn · UCCL02099
- SLC to James R. Osgood, 28 November 1881 · Montreal, Canada · UCCL02104
- SLC to Osgood (J.R.) & Co., 28 December 1881 · Hartford, Conn · UCCL02128
- SLC to James R. Osgood, 31 December 1881 · Hartford, Conn · UCCL02130
- SLC to James R. Osgood, 7 January 1882 · Hartford, Conn · UCCL02145
- SLC to William D. Howells, 18 January 1882 · Hartford, Conn · UCCL02150
- SLC to James R. Osgood, 12 February 1882 · Hartford, Conn · UCCL02159
- SLC to William D. Howells, 14 March 1882 · Hartford, Conn · UCCL09215
- SLC to William D. Howells, 14 March 1882 · Hartford, Conn · UCCL02172
- SLC to William D. Howells, 23 March 1882 · Hartford, Conn · UCCL02178
- SLC to James R. Osgood, 23 March 1882 · Hartford, Conn · UCCL02183
- SLC to William D. Howells, 27 March 1882 · Hartford, Conn · UCCL02180
- SLC to James R. Osgood, 7 April 1882 · Hartford, Conn · UCCL02197
- SLC, OLC to William D. Howells, 16 April 1882 · Hartford, Conn · UCCL02200
- SLC to William D. Howells, 16 June 1882 · Hartford, Conn · UCCL02220
- SLC to William D. Howells, 20 June 1882 · Hartford, Conn · UCCL02221
- SLC to William D. Howells, 22 June 1882 · Hartford, Conn · UCCL02564
- SLC to William D. Howells, 24 July 1882 · Elmira, N.Y · UCCL02239
- SLC to Edward S. Martin, 16 December 1882 · Hartford, Conn · UCCL10842
- SLC to James R. Osgood, 17 April 1883 · Hartford, Conn · UCCL02372
- SLC to William D. Howells, 18 May 1883 · Hartford, Conn · UCCL02388
- SLC to A. V. S. Anthony, 4 October 1883 · Hartford, Conn · UCCL02847
- SLC to William D. Howells, 15 October 1883 · Hartford, Conn · UCCL02852
- SLC to William D. Howells, 4 November 1883 · Hartford, Conn · UCCL02854
- SLC to William D. Howells, 19 November 1883 · Hartford, Conn · UCCL02857
- SLC to William D. Howells, 21 November 1883 · Hartford, Conn · UCCL02858
- SLC to William D. Howells, 20 December 1883 · Hartford, Conn · UCCL02870
- SLC to James R. Osgood, 21 December 1883 · Hartford, Conn · UCCL02872
- SLC to James R. Osgood, 17 January 1884 · Hartford, Conn · UCCL02890
- SLC to William D. Howells, 18 January 1884 · Hartford, Conn · UCCL02892
- SLC to William D. Howells, 20 January 1884 · Hartford, Conn · UCCL02894
- SLC to William D. Howells, 9 February 1884 · Hartford, Conn · UCCL02914
- SLC to William D. Howells, 13 February 1884 · Hartford, Conn · UCCL02917
- SLC to William D. Howells, 18 February 1884 · Hartford, Conn · UCCL02919
- SLC to Augustin Daly, 21 February 1884 · New York, N.Y · UCCL03079
- SLC to William D. Howells, 26 February 1884 · Hartford, Conn · UCCL02922
- SLC to William D. Howells, 5 March 1884 · Hartford, Conn · UCCL02933
- SLC to William D. Howells, 13 March 1884 · Hartford, Conn · UCCL02935
- SLC to William D. Howells, 15 March 1884 · Hartford, Conn · UCCL02936
- SLC to James R. Osgood, 20 March 1884 · Hartford, Conn · UCCL02937
- SLC to Thomas Bailey Aldrich, 10 April 1884 · New York, N.Y · UCCL02949
- SLC to Thomas Bailey Aldrich, 22 April 1884 · Hartford, Conn · UCCL08831
- SLC to William D. Howells, 6 May 1884 · Hartford, Conn · UCCL02971
- SLC to William D. Howells, 12 May 1884 · Hartford, Conn · UCCL02977
- SLC to William D. Howells, 24 May 1884 · Hartford, Conn · UCCL02986
- SLC to William D. Howells, 1 June 1884 · Hartford, Conn · UCCL02989
- SLC to William D. Howells, 28 June 1884 · Elmira, N.Y · UCCL02998
- SLC to William D. Howells, 15 July 1884 · Elmira, N.Y · UCCL01529
- SLC to William D. Howells, 7 August 1884 · Elmira, N.Y · UCCL01537
- SLC to William D. Howells, 7 September 1884 · Elmira, N.Y · UCCL01434
- SLC to William D. Howells, 15 September 1884 · Elmira, N.Y · UCCL01331
- SLC to William D. Howells, 17 October 1884 · Hartford, Conn · UCCL03008
- SLC to William D. Howells, 21 October 1884 · Hartford, Conn · UCCL03010
- SLC to Thomas Bailey Aldrich, 29 October 1884 · Hartford, Conn · UCCL03013
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