Addressees: Harrison, Katharine I
- SLC to Katharine I. Harrison, 15 April 1895 · Paris, France · UCCL04868
- SLC to Katharine I. Harrison, 26 May 1897 · London, England · UCCL09744
- SLC to Katharine I. Harrison, 21–22 December 1899 · London, England · UCCL05722
- SLC to Katharine I. Harrison, 8 January 1900 · London, England · UCCL05742
- SLC to Katharine I. Harrison, 1 May 1901 · New York, N.Y · UCCL06048
- SLC to Katharine I. Harrison, 18 January 1902, Riverdale, N.Y · UCCL13780
- SLC to Katharine I. Harrison, 26 April 1902 · Riverdale, N.Y · UCCL06330
- SLC to Katharine I. Harrison, 29 August 1902 · York Harbor, Me · UCCL09395
- SLC to Katharine I. Harrison, 12 January 1903 · Riverdale, N.Y · UCCL06554
- SLC to Katharine I. Harrison, 16 January 1903 · Riverdale, N.Y · UCCL06563
- SLC to Katharine I. Harrison, 17 October 1903 · New York, N.Y · UCCL12393
- Isabel V. Lyon to Katharine I. Harrison, 1 March 1904 · Florence, Italy · UCCL11215
- SLC to Katharine I. Harrison, , 9 October 1904 · UCCL13988
- SLC to Katharine I. Harrison, 17 November 1904 · New York, N.Y · UCCL08664
- SLC to Katharine I. Harrison, 22 November 1904 · New York, N.Y · UCCL06952
- SLC per Isabel V. Lyon to Katharine I. Harrison, 13 June 1905 · Dublin, N.H · UCCL07062
- SLC per Isabel V. Lyon to Katharine I. Harrison, 12 July 1905 · Dublin, N.H · UCCL07081
- SLC per Isabel V. Lyon to Katharine I. Harrison, 15 August 1905 · Dublin, N.H · UCCL07109
- SLC per Isabel V. Lyon to Katharine I. Harrison, 2 October 1905 · Dublin, N.H · UCCL07157
- SLC per Isabel V. Lyon to Katharine I. Harrison, 16 January 1906 · New York, N.Y · UCCL07313
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