Addressees: Langdon, Olivia Lewis
- OLL to Olivia Lewis Langdon, 13 March 1864 · New York, N.Y · UCCL11872
- Samuel L. Clemens to Olivia Lewis (Mrs. Jervis) Langdon, 13 February 1869 · Ravenna, Ohio · UCCL00249
- Samuel L. Clemens to Olivia L. Langdon with a note to Jervis and Olivia Lewis Langdon, 24 May 1869 · South Windsor, Conn · UCCL00309
- Samuel L. Clemens to Olivia Lewis (Mrs. Jervis) Langdon, 23 June 1869 · New York, N.Y · UCCL00319
- OLC to Olivia Lewis Langdon, 6 February 1870 · Buffalo, N.Y · UCCL00419
- Samuel L. and Olivia L. Clemens to Jervis and Olivia Lewis Langdon, 9 February 1870 · Buffalo, N.Y · UCCL00423
- Olivia L. Clemens to Olivia Lewis Langdon, Susan Crane, and Jervis Langdon, 12 February 1870 · Buffalo, N.Y · UCCL00425
- OLC to Olivia Lewis Langdon · UCCL00427
- Samuel L. and Olivia L. Clemens to Olivia Lewis Langdon, 20 February 1870 · Buffalo, N.Y · UCCL00430
- OLC to OLL 20 February 1870 · Buffalo, N.Y · UCCL00429
- OLC to Jervis and Olivia Lewis Langdon · UCCL00436
- Samuel L. and Olivia L. Clemens to Jervis and Olivia Lewis Langdon, 27 March 1870 · Buffalo, N. Y · UCCL00450
- Samuel L. and Olivia L. Clemens to Jervis and Olivia Lewis Langdon, 1 April 1870 · Buffalo, N. Y · UCCL00452
- Samuel L. and Olivia L. Clemens to Jervis and Olivia Lewis Langdon, 16 and 17 April 1870 · Buffalo, N.Y · UCCL00455
- Samuel L. and Olivia L. Clemens to Jervis and Olivia Lewis Langdon, 19 June 1870 · Buffalo, N.Y · UCCL00480
- Samuel L. Clemens to Olivia Lewis Langdon, per Telegraph Operator, 7 November 1870 · Buffalo, N.Y · UCCL00526
- Samuel L. Clemens to Olivia Lewis Langdon, 11? November 1870 · Buffalo, N.Y · UCCL08958
- Samuel L. Clemens to Olivia Lewis Langdon, 19 November 1870 · Buffalo, N.Y · UCCL00539
- Samuel L. Clemens to Olivia Lewis Langdon, 3 December 1872 · Hartford, Conn · UCCL00838
- OLC to Olivia Lewis Langdon, 19 January 1873 · Hartford, Conn · UCCL00859
- Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 17 February 1873 · Hartford, Conn · UCCL00879
- Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 17 May 1873 · SS Batavia at New York, N.Y · UCCL00916
- OLC to Olivia Lewis Langdon, 23–26 May 1873 · SS Batavia · UCCL00918
- OLC to Olivia Lewis Langdon and Charles J. Langdon, July 1873 · London, England · UCCL00938
- OLC to Olivia Lewis Langdon, 5 July 1873 · London, England · UCCL00761
- Samuel L. Clemens to Olivia Lewis Langdon, 20 July 1873 · York, England · UCCL00955
- Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 2 and 6 August 1873 · Edinburgh, Scotland · UCCL00959
- OLC to Olivia Lewis Langdon, 10–15 August 1873 · Edinburgh, Scotland · UCCL00790
- OLC to Olivia Lewis Langdon, 31 August–2 September 1873 · Belfast, Ireland · UCCL00801
- OLC to Olivia Lewis Langdon, 21 September 1873 · London, England · UCCL00804
- OLC to Olivia Lewis Langdon, 25–28 September 1873 · London, England · UCCL00964
- Samuel L. Clemens to Olivia Lewis Langdon, 12 October 1873 · London, England · UCCL00973
- Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 24? September 1874 · Hartford, Conn · UCCL01133
- Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 14 March 1875 · Hartford, Conn · UCCL01207
- OLC to Olivia Lewis Langdon, 21 March 1875 · Hartford, Conn · UCCL01213
- OLC to Olivia Lewis Langdon, 9 May 1875 · Hartford, Conn · UCCL01231
- Samuel L. Clemens to Olivia Lewis Langdon, 22 December 1875 · Hartford, Conn · UCCL01288
- Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 2 and 4 February 1877 · Hartford, Conn · UCCL01405
- OLC to Olivia Lewis Langdon, 6 May 1877 · Hartford, Conn · UCCL01427
- Samuel L. Clemens to Olivia Lewis Langdon, 5 December 1877 · Hartford, Conn · UCCL01509
- Samuel L. Clemens to Olivia Lewis Langdon, 25 December 1877 · Hartford, Conn · UCCL01517
- OLC to Olivia Lewis Langdon, 26–30 December 1877 · Hartford, Conn · UCCL01518
- Samuel L. Clemens to Olivia Lewis Langdon, 20 April 1878 · SS Holsatia en route from New York, N.Y., to Hamburg, Germany · UCCL01556
- OLC to Olivia Lewis Langdon, 26 April 1878 · Hamburg, Germany · UCCL01557
- OLC to Olivia Lewis Langdon, 7, 10, and 12 May 1878 · Heidelberg, Germany · UCCL01559
- Susy (Olivia Susan) Clemens per Olivia L. Clemens to Olivia Lewis Langdon, 12–18 May 1878 · Heidelberg, Germany · UCCL01561
- OLC to Olivia Lewis Langdon, 26 May 1878 · Heidelberg, Germany · UCCL01564
- OLC to Olivia Lewis Langdon, 9 June 1878 · Heidelberg, Germany · UCCL01569
- Clara L. Clemens per Olivia L. Clemens to Olivia Lewis Langdon, 10 June 1878 · Heidelberg, Germany · UCCL01565
- OLC to Olivia Lewis Langdon, 4–5 August 1878 · Baden Baden, Germany · UCCL01582
- OLC to Olivia Lewis Langdon, 18 August 1878 · Lucerne, Switzerland · UCCL01584
- OLC, Susy (Olivia Susan) Clemens to Olivia Lewis Langdon, 1–2 September 1878 · Ouchy, Switzerland · UCCL01593
- Samuel L. Clemens to Olivia Lewis Langdon, 13 September 1878 · Geneva, Switzerland · UCCL01595
- OLC to Olivia Lewis Langdon, 15 September 1878 · Chambery, France · UCCL01596
- OLC, Susy (Olivia Susan) Clemens to Olivia Lewis Langdon, 29–30 September 1878 · Venice, Italy · UCCL01598
- Clara L. Clemens to Olivia Lewis Langdon, 29 September–30 September 1878 · Venice, Italy · UCCL10594
- OLC to Olivia Lewis Langdon, 13 October 1878 · Venice, Italy · UCCL01600
- OLC to Olivia Lewis Langdon, 21–27 October 1878 · Florence, Italy · UCCL01602
- OLC to Olivia Lewis Langdon, 10 November 1878 · Rome, Italy · UCCL01605
- OLC to Olivia Lewis Langdon, 20–25 November 1878 · Munich, Germany · UCCL01607
- Samuel L. Clemens to Olivia Lewis Langdon, 2 December 1878 · Munich, Germany · UCCL01611
- Susy (Olivia Susan) Clemens to Olivia Lewis Langdon, 7 December 1878 · Munich, Germany · UCCL02213
- Olivia L. and Olivia Susan (Susy) Clemens per Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 8 December 1878 · Munich, Germany · UCCL01612
- OLC to Olivia Lewis Langdon, 11 December 1878 · Munich, Germany · UCCL01613
- OLC to Olivia Lewis Langdon, 22 December 1878 · Munich, Germany · UCCL01616
- Samuel L. Clemens to Olivia Lewis Langdon, 26? December 1878 · Munich, Germany · UCCL01617
- OLC to Olivia Lewis Langdon, 1–5 January 1879 · Munich, Germany · UCCL01620
- Olivia L. and Samuel L. Clemens to Olivia Lewis Langdon, 19 January 1879 · Munich, Germany · UCCL01621
- OLC to Olivia Lewis Langdon, 2 February 1879 · Munich, Germany · UCCL01627
- OLC to Olivia Lewis Langdon, 16 February 1879 · Munich, Germany · UCCL01634
- Samuel L. Clemens to Olivia Lewis Langdon, 23 February 1879 · Munich, Germany · UCCL01635
- Susy (Olivia Susan) Clemens to Olivia Lewis Langdon, March 1879 · Paris, France · UCCL01641
- OLC to Olivia Lewis Langdon, 2 March 1879 · Paris, France · UCCL01636
- OLC to Olivia Lewis Langdon, 16 March 1879 · Paris, France · UCCL01640
- Samuel L. Clemens, Olivia Susan (Susy) Clemens (per Samuel L. Clemens), and Olivia L. Clemens to Olivia Lewis Langdon, 30 March 1879 · Paris, France · UCCL01645
- OLC to Olivia Lewis Langdon, 13 April 1879 · Paris, France · UCCL01647
- OLC to Olivia Lewis Langdon, 27 April 1879 · Paris, France · UCCL01651
- OLC to Olivia Lewis Langdon, 13–16 May 1879 · Paris, France · UCCL01579
- OLC to Olivia Lewis Langdon, 25 May 1879 · Paris, France · UCCL01657
- OLC to Olivia Lewis Langdon, June 1879 · Paris, France · UCCL01674
- OLC to Olivia Lewis Langdon, 6 July 1879 · Paris, France · UCCL01676
- OLC to Olivia Lewis Langdon, 20 July 1879 · London, England · UCCL01677
- OLC to Olivia Lewis Langdon, 3 August 1879 · Oxford, England · UCCL01679
- OLC to Olivia Lewis Langdon, 17 August 1879 · London, England · UCCL01680
- OLC to Olivia Lewis Langdon, 1 November 1879 · Hartford, Conn · UCCL01705
- OLC to Olivia Lewis Langdon, 16 November 1879 · Hartford, Conn · UCCL01717
- OLC to Olivia Lewis Langdon, 30 November 1879 · Hartford, Conn · UCCL01730
- OLC to Olivia Lewis Langdon, 8 December 1879 · Hartford, Conn · UCCL02809
- OLC to Olivia Lewis Langdon, 1879 · Unknown place · UCCL01619
- OLC to Olivia Lewis Langdon, 28 March 1880 · Hartford, Conn · UCCL01776
- Samuel L. Clemens for Jean Clemens to Olivia Lewis Langdon, 19 August 1880 · Elmira, N.Y · UCCL01826
- Samuel L. Clemens to Olivia Lewis Langdon, 25 December 1880 · Hartford, Conn · UCCL01881
- SLC to Susan L. Crane and Mrs. Jervis Langdon, Unknown date, Hartford, Conn · UCCL08711
- SLC to Olivia Lewis Langdon, 9 January 1881 · Hartford, Conn · UCCL01889
- SLC to Olivia Lewis Langdon, 19 August 1883 · Elmira, N.Y · UCCL02824
- SLC to Olivia Lewis Langdon, Unknown date, Hartford, Conn · UCCL08732
- SLC to Olivia Lewis Langdon, 19 October 1886 · Hartford, Conn · UCCL03471
- SLC to Olivia Lewis Langdon, 21 October 1886 · Hartford, Conn · UCCL03474
- OLC to Olivia Lewis Langdon, 13 January 1887 · Hartford, Conn · UCCL03508
- OLC to Olivia Lewis Langdon, 3 March 1887 · Hartford, Conn · UCCL03579
- SLC to Olivia Lewis Langdon, 19 April 1888 · Hartford, Conn · UCCL03716
- SLC, OLC to Olivia Lewis Langdon, 19 August 1888 · Elmira, N.Y · UCCL03751
- Jean Clemens per SLC to Olivia Lewis Langdon, 19 August 1888 · Elmira, N.Y · UCCL11272
- OLC to Olivia Lewis Langdon, 19 November 1888 · Hartford, Conn · UCCL03834
- OLC to Olivia Lewis Langdon, 30 November 1888 · Hartford, Conn · UCCL03840
- SLC to Olivia Lewis Langdon, 1 December 1888 · Hartford, Conn · UCCL03797
- SLC to Olivia Lewis Langdon, 6 December 1888 · Hartford, Conn · UCCL03802
- SLC, OLC to Olivia Lewis Langdon, 14–19 December 1888 · Hartford, Conn · UCCL03804
- Jean Clemens to Olivia Lewis Langdon, 30 December 1888 · Hartford, Conn · UCCL03814
- OLC to Olivia Lewis Langdon, 10 February 1889 · Hartford, Conn · UCCL03861
- OLC to Olivia Lewis Langdon, 24 March 1889 · Hartford, Conn · UCCL03876
- SLC to Olivia Lewis Langdon, 17 April 1889 · Hartford, Conn · UCCL03885
- SLC to Olivia Lewis Langdon, 7 October 1889 · Hartford, Conn · UCCL03947
- SLC to Olivia Lewis Langdon, 9 November 1889 · Hartford, Conn · UCCL03963
- SLC to Olivia Lewis Langdon, 18 December 1889 · Hartford, Conn · UCCL03988
- SLC to Olivia Lewis Langdon, 22 December 1889 · Hartford, Conn · UCCL03992
- SLC, OLC to Olivia Lewis Langdon, 27 December 1889 · Hartford, Conn · UCCL03994
- Clara L. Clemens to Olivia Lewis Langdon, 27 December 1889 · Hartford, Conn · UCCL03996
- OLC to Olivia Lewis Langdon, 2 February 1890 · Hartford, Conn · UCCL04011
- OLC to Olivia Lewis Langdon, 10 March 1890 · Hartford, Conn · UCCL04024
- Susy (Olivia Susan) Clemens to Olivia Lewis Langdon, 6 April 1890 · Hartford, Conn · UCCL04037
- OLC to Olivia Lewis Langdon, 20 April 1890 · Hartford, Conn · UCCL04042
- OLC to Olivia Lewis Langdon, 7 May 1890 · Hartford, Conn · UCCL04046
- Clara L. Clemens to Olivia Lewis Langdon, 14 June 1890 · Hartford, Conn · UCCL04052
- Susy (Olivia Susan) Clemens to Olivia Lewis Langdon, 1 July 1890 · Tannersville, N.Y · UCCL04057
- Jean Clemens to Olivia Lewis Langdon, 1 July 1890 · Tannersville, N.Y · UCCL04059
- SLC, OLC to Olivia Lewis Langdon, 19 August 1890 · Elmira, N.Y · UCCL04082
- OLC to Olivia Lewis Langdon, 24 August 1890 · Tannersville, N.Y · UCCL04084
- Jean Clemens to Olivia Lewis Langdon, 24 August 1890 · Tannersville, N.Y · UCCL04085
- OLC to Olivia Lewis Langdon, 15 September 1890 · Tannersville, N.Y · UCCL04096
- Susy (Olivia Susan) Clemens to Olivia Lewis Langdon, 20 October 1890 · Bryn Mawr, Pa · UCCL04104
- OLC to Olivia Lewis Langdon, 26 October 1890 · Hartford, Conn · UCCL04107
- OLC to Olivia Lewis Langdon, 3 November 1890 · Hartford, Conn · UCCL04109
- OLC to Olivia Lewis Langdon, 8 November 1890 · Hartford, Conn · UCCL04112
- SLC, OLC to Olivia Lewis Langdon, 25 December n.y. · Unknown place · UCCL10588
- SLC to Olivia Lewis Langdon, Unknown date, Hartford, Conn · UCCL03820
- SLC to Olivia Lewis Langdon, Unknown date · Unknown place · UCCL07442
- OLC to Olivia Lewis Langdon, Unknown date, Hartford, Conn · UCCL08962
- OLC to Olivia Lewis Langdon, Unknown date · Hartford, Conn · UCCL14064
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