Sources: ViU
- Samuel L. Clemens to William H. Clagett, 28 February 1862 · Carson City, Nev. Terr · UCCL00037
- Samuel L. Clemens to William H. Clagett, 8 and 9 March 1862 · Carson City, Nev. Terr · UCCL00039
- Samuel L. Clemens to William H. Clagett, 18 April 1862 · Aurora, Calif./Nev. Terr · UCCL00044
- Samuel L. Clemens to Orion Clemens, 22 June 1862 · Aurora, Calif./Nev. Terr · UCCL00052
- Samuel L. Clemens to William H. Clagett, 9 September 1862 · Aurora, Calif./Nev. Terr · UCCL00059
- Samuel L. Clemens to Charles Henry Webb, 19 March 1867 · St. Louis, Mo · UCCL00120
- Samuel L. Clemens to Jane Lampton Clemens and Family, 15 April 1867 · New York, N.Y · UCCL00122
- Samuel L. Clemens to Jane Lampton Clemens and Family, 19 April 1867 · New York, N.Y · UCCL00123
- Samuel L. Clemens to Frank Fuller, 7 June 1867 · New York, N.Y · UCCL00135
- Samuel L. Clemens to Mary Mason Fairbanks, 2 December 1867 · Washington, D.C · UCCL00166
- Samuel L. Clemens to Jane Lampton Clemens and Pamela A. Moffett, 9 January 1868 · Washington, D.C · UCCL00176
- Samuel L. Clemens to Charles Henry Webb, 15 January 1868 · Washington, D.C · UCCL00181
- Samuel L. Clemens to Mary E. (Mollie) Clemens, 21 February 1868 · Washington, D.C · UCCL00199
- Samuel L. Clemens to Elisha Bliss, Jr., 28 May 1868 · San Francisco, Calif · UCCL02733
- SLC to I. N. Higgins, September 1868 · Unknown place · UCCL10494
- Samuel L. Clemens to Joseph H. Twichell, 28 November 1868 · New York, N.Y · UCCL02769
- Samuel L. Clemens to Silas S. Packard, 1 June 1869 · Elmira, N. Y · UCCL00311
- Samuel L. Clemens to Henry M. Crane, 21 August 1869 · Buffalo, N.Y · UCCL00338
- Samuel L. Clemens to Henry M. Crane, 8 September 1869 · Buffalo, N.Y · UCCL00352
- Samuel L. Clemens to Henry M. Crane, 21 September 1869 · Buffalo, N. Y · UCCL00353
- Samuel L. Clemens to James Redpath, 6 December 1869 · New York, N.Y · UCCL00383
- Samuel L. Clemens to James Redpath, 8 January 1870 · Albany, N.Y · UCCL00405
- Samuel L. Clemens to Charles Warren Stoddard, 6? February 1870 · Buffalo, N.Y · UCCL08584
- Samuel L. Clemens to James T. Fields, 21 March 1870 · Buffalo, N.Y · UCCL00446
- Samuel L. Clemens to Charles Henry Webb, 26 November 1870 · Buffalo, N.Y · UCCL00544
- Samuel L. Clemens to Earl D. Berry, 6 and 7 January 1871 · Buffalo, N.Y · UCCL00556
- Samuel L. Clemens to C. F. Sterling, 24 January 1871 · Buffalo, N.Y · UCCL00563
- Samuel L. Clemens to Willard McKinstry, 28 January 1871 · Buffalo, N.Y · UCCL00569
- Samuel L. Clemens to Thomas Nast, 4 April 1871 · Elmira, N.Y · UCCL00599
- Samuel L. Clemens to Elisha Bliss, Jr., 15 May 1871 · Elmira, N.Y · UCCL00612
- Samuel L. Clemens to James Redpath, 10 July 1871 (1st of 3) · Elmira, N.Y · UCCL00634
- Samuel L. Clemens to William Bowen, 23 July 1871 · Elmira, N.Y · UCCL00639
- Samuel L. Clemens to Moses S. Beach, 16 November 1871 · Portland, Maine · UCCL00675
- Samuel L. Clemens to James Redpath, 3 March 1872 · Hartford, Conn · UCCL00729
- Samuel L. Clemens to John Henry Riley, 27 March 1872 · Elmira, N.Y · UCCL00740
- Samuel L. Clemens to James Redpath, 20 April 1872 · Elmira, N.Y · UCCL00742
- Samuel L. Clemens to Joseph L. Blamire, 21 June 1872 · Hartford, Conn · UCCL00758
- Samuel L. Clemens to Joseph L. Blamire, 23 June 1872 · Hartford, Conn · UCCL00759
- Samuel L. Clemens to Joseph L. Blamire, 16 or 17 July 1872 · New Saybrook, Conn · UCCL11894
- Samuel L. Clemens to Elisha Bliss, Jr., 20 July 1872 · New Saybrook, Conn · UCCL00770
- Samuel L. Clemens to Joseph L. Blamire, 21 July 1872 · New Saybrook, Conn · UCCL00772
- Samuel L. Clemens to Henry Lee, 25 October 1872 · London, England · UCCL00824
- Samuel L. Clemens to The Editor of the London Telegraph per Unidentified, 8 November 1872 · London, England · UCCL00830
- Samuel L. Clemens and Others to John E. Mouland, 23 November 1872 · SS Batavia en route from Liverpool, England, to Boston, Mass · UCCL00834
- Samuel L. Clemens to John E. Mouland, 3 December 1872 · Hartford, Conn · UCCL00839
- Samuel L. Clemens to John E. Mouland, 22 January 1873 · Hartford, Conn · UCCL00862
- Samuel L. Clemens to Elisha Bliss, Jr., 4 March 1873 · Hartford, Conn · UCCL00881
- Samuel L. Clemens to William Dean Howells, 13 March 1873 · Hartford, Conn · UCCL00887
- Samuel L. Clemens to Henry Lee, 1 or 2 June 1873 · London, England · UCCL00922
- Samuel L. Clemens to Joaquin Miller, 11 June 1873 · London, England · UCCL00923
- Samuel L. Clemens to Joaquin Miller, 1 and 2 July 1873 · London, England · UCCL00941
- Samuel L. Clemens to Elisha Bliss, Jr., 7 July 1873 · London, England · UCCL00948
- Samuel L. Clemens to Henry Lee, 10 September 1873 · London, England · UCCL00961
- Samuel L. Clemens to Louisa P. MacDonald, 29 September 1873 · 1st of 2 · London, England · UCCL00966
- Samuel L. Clemens to Henry Lee, 8 October 1873 · London, England · UCCL11812
- Samuel L. Clemens to George Bentley, 13 October 1873 · London, England · UCCL00974
- Samuel L. Clemens to George Bentley, 15 and 30 October 1873 · London, England, and SS Batavia en route from Liverpool, England, to New York, N.Y · UCCL00975
- Samuel L. Clemens to Elisha Bliss, Jr., 5 November 1873 · Hartford, Conn · UCCL00979
- Samuel L. Clemens to Henry Lee, per Charles Warren Stoddard, 22 November 1873 · London, England · UCCL00986
- Samuel L. Clemens to Shirley Brooks, 12 December 1873 · London, England · UCCL01002
- Samuel L. Clemens to James Redpath, per Charles Warren Stoddard, 21 December 1873 · London, England · UCCL01013
- Samuel L. Clemens to Charles Kingsley, 13 February 1874 · Hartford, Conn · UCCL01048
- Samuel L. Clemens to Edgar Wakeman, 25 April 1874 · Elmira, N.Y · UCCL01079
- Samuel L. Clemens to Unidentified, 24 June 1874 · Elmira, N.Y · UCCL01103
- Samuel L. Clemens to William Dean Howells, 22? July 1874 · Elmira, N.Y · UCCL01110
- Samuel L. Clemens to William W. Belknap, 28 August 1874 · Elmira, N.Y · UCCL01119
- Samuel L. Clemens to William W. Belknap, 5 September 1874 · Elmira, N.Y · UCCL01123
- Samuel L. Clemens to Jerome B. Stillson, per Telegraph Operator, 18 September 1874 · New York, N.Y · UCCL01125
- Samuel L. Clemens to William W. Belknap, 24 September 1874 · Hartford, Conn · UCCL01132
- Samuel L. Clemens to Augustin Daly, 29 October 1874 · Hartford, Conn · UCCL01140
- Samuel L. Clemens to James Redpath, 29 November 1874 · Hartford, Conn · UCCL01157
- Samuel L. Clemens to Miss Street, 1 December 1874 · Hartford, Conn · UCCL01158
- Samuel L. Clemens to William F. Gill, 31 May 1875 · Hartford, Conn · UCCL01237
- Samuel L. Clemens to P. T. Barnum, 7 June 1875 · Hartford, Conn · UCCL01240
- Samuel L. Clemens to George E. Waring, Jr., 14 July 1875 · Hartford, Conn · UCCL01250
- Samuel L. Clemens to H. O. Houghton and Company, 28 October 1875 · Hartford, Conn · UCCL01278
- Samuel L. Clemens to Unidentified, 28 January? 1876 · Hartford, Conn · UCCL10772
- Samuel L. Clemens to Elisha Bliss, Jr., 17 February 1876 · Hartford, Conn · UCCL01308
- Samuel L. Clemens to Unidentified, 24 April 1876 · Hartford, Conn · UCCL09032
- Samuel L. Clemens to George Bentley, 26 April 1876 · Hartford, Conn · UCCL01326
- Samuel L. Clemens to Miss Harriet, 14 June 1876 · Hartford, Conn · UCCL01342
- Samuel L. Clemens to George Bentley, 6 July 1876 · Hartford, Conn · UCCL01348
- Samuel L. Clemens to Pamela A. Moffett, 27 February 1877 · Hartford, Conn · UCCL01409
- Samuel L. Clemens to Edwina Booth, 8 April 1877 · Hartford, Conn · UCCL09285
- Samuel L. Clemens to Paul Apfelstedt, 2? August 1877 · Hartford, Conn · UCCL01460
- Samuel L. Clemens to George Bentley, 15 September 1877 · Hartford, Conn · UCCL01480
- Samuel L. Clemens to Andrew Chatto, per Fanny C. Hesse, 7 November 1877 · Hartford, Conn · UCCL01502
- Samuel L. Clemens to Charles Follen Adams, 20 December 1877 · Hartford, Conn · UCCL01513
- Samuel L. Clemens for Olivia L. Clemens to Mary C. Shipman, 26 February–2 March 1878 · Hartford, Conn · UCCL01539
- Samuel L. Clemens to J. Langdon and Co., 5 June 1879 · Paris, France · UCCL01663
- Samuel L. Clemens to Lucius Fairchild, 1–9 July 1879 · Paris, France · UCCL11072
- Samuel L. Clemens to George S. Gilman, 15 September 1879 · Elmira, N.Y · UCCL01689
- Samuel L. Clemens to William Winter, 5 December 1879 · Hartford, Conn · UCCL01734
- Samuel L. Clemens to Elisabeth G. (Lilly) Warner, April 1880 · Hartford, Conn · UCCL11073
- Samuel L. Clemens to Hjalmar H. Boyesen, 23 April 1880 · Hartford, Conn · UCCL01792
- Samuel L. Clemens to Edwin Pond Parker, 15 May 1880 · Hartford, Conn · UCCL01805
- Samuel L. Clemens to Edward H. House, 6 October 1880 · Hartford, Conn · UCCL01836
- Samuel L. Clemens to Edward H. House, 9 November 1880 · Hartford, Conn · UCCL02851
- Samuel L. Clemens to Edwin Pond Parker, 22? December 1880 · Hartford, Conn · UCCL01876
- Samuel L. Clemens to James A. Garfield, 12 January 1881 · Hartford, Conn · UCCL01891
- SLC to Stephen C. Massett, 31 January 1881 · Hartford, Conn · UCCL01900
- SLC to Edward H. House, 4 February 1881 · Hartford, Conn · UCCL01905
- SLC to Koto House, 12 February 1881 · Hartford, Conn · UCCL10346
- SLC to Edward H. House, 19 February 1881 · Hartford, Conn · UCCL01910
- SLC to Karl and Hattie J. Gerhardt, 11–19 April 1881 · Hartford, Conn · UCCL01935
- SLC to Francis Augustus Teall, 22 April 1881 · Hartford, Conn · UCCL01938
- SLC to Osgood (J.R.) & Co., 23 May 1881 · Hartford, Conn · UCCL01959
- SLC to Charles L. Webster, 5 June 1881 · Branford, Conn · UCCL01970
- SLC to Osgood (J.R.) & Co., 16 June 1881 · Branford, Conn · UCCL01972
- SLC to Charles L. Webster, 10 July 1881 · Branford, Conn · UCCL01984
- SLC to James R. Osgood, 2 October 1881 · Hartford, Conn · UCCL02041
- SLC to Edward H. House, 4 October 1881 · Hartford, Conn · UCCL02043
- SLC to Edward H. House, 8 October 1881 · Hartford, Conn · UCCL02048
- SLC to Edward H. House, 21 October 1881 · Hartford, Conn · UCCL02057
- SLC to Edward H. House, 24 October 1881 · Hartford, Conn · UCCL02059
- SLC to Edward H. House, 26 October 1881 · Hartford, Conn · UCCL02069
- SLC to Edward H. House, 16 November 1881 · Hartford, Conn · UCCL02088
- SLC to Edward H. House, 21 November 1881 · Hartford, Conn · UCCL02095
- SLC to Sarah Pratt McLean, 12 December 1881 · Hartford, Conn · UCCL02115
- SLC to Jane L. Clemens, 20 December–31 December 1881 · Hartford, Conn · UCCL09315
- SLC to Lilly G. Warner, 25 December 1881 · Hartford, Conn · UCCL11075
- SLC to Edward H. House, 27 December 1881 · Hartford, Conn · UCCL02126
- SLC to Koto House, 2 January 1882 · Hartford, Conn · UCCL09648
- SLC to James R. Osgood, 4 January 1882 · Hartford, Conn · UCCL02142
- SLC to Hjalmar H. Boyesen, 11 January 1882 · Hartford, Conn · UCCL02149
- SLC to Lucy Hooper, 21 January 1882 · Hartford, Conn · UCCL02151
- SLC to Charles E. Wood, 21 February 1882 · Hartford, Conn · UCCL02161
- SLC to Edward H. House, 23 February 1882 · Hartford, Conn · UCCL02164
- SLC to Charles E. Wood, 3 April 1882 · Hartford, Conn · UCCL02196
- SLC to James R. Osgood, 14 April 1882 · Hartford, Conn · UCCL02135
- SLC to Charles E. Wood, 5–9 August 1882 · Elmira, N.Y · UCCL02243
- SLC to David L. Grasmere, 14 September 1882 · Elmira, N.Y · UCCL02267
- SLC to James R. Osgood, 18 October 1882 · Hartford, Conn · UCCL02292
- SLC to Edward H. House, 2 December 1882 · Hartford, Conn · UCCL02313
- SLC to Horace Russell, 12 December 1882 · Hartford, Conn · UCCL02314
- SLC to Unidentified, 5 January 1883 · Hartford, Conn · UCCL10773
- SLC to Osgood (J.R.) & Co., 6 January 1883 · Hartford, Conn · UCCL02331
- SLC to Arthur Gilman, 8 January 1883 · Hartford, Conn · UCCL02332
- SLC to Margaret Warner, 10 February 1883 · Hartford, Conn · UCCL11077
- SLC to George E. Waring, Jr., 6 April 1883 · Hartford, Conn · UCCL02368
- SLC to George MacDonald, 14–31 May 1883 · Hartford, Conn · UCCL09672
- SLC to Kingsland Smith, 28 July 1883 · Elmira, N.Y · UCCL02075
- SLC to Edward H. House, 1 October 1883 · Hartford, Conn · UCCL02844
- SLC to Edward H. House, 12 November 1883 · Hartford, Conn · UCCL02855
- SLC to OLC, Unknown date, Hartford, Conn · UCCL10852
- SLC to Edward H. House, 14 January 1884 · Hartford, Conn · UCCL02889
- SLC to Augustin Daly, 17 February 1884 · Hartford, Conn · UCCL02918
- SLC to Edward H. House, 27 February 1884 · Hartford, Conn · UCCL02923
- SLC to Andrew Chatto, 3 March 1884 · Hartford, Conn · UCCL02932
- SLC to Edward H. House, 23 May 1884 · Hartford, Conn · UCCL02983
- SLC to American Publishing Co., 11 August 1884 · Elmira, N.Y · UCCL01520
- SLC to George Iles, 8 September 1884 · Elmira, N.Y · UCCL01359
- SLC to Edward H. House, 31 October 1884 · Hartford, Conn · UCCL03015
- SLC to Chatto & Windus, 5 November 1884 · Hartford, Conn · UCCL03020
- SLC to Susy (Olivia Susan) Clemens, 5 December 1884 · Utica, N.Y · UCCL03046
- SLC to Clara L. Clemens, 14 December 1884 · Grand Rapids, Mich · UCCL03058
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