Addressees: Matthews, Brander
- SLC to Brander Matthews, 31 March 1885 · New York, N.Y · UCCL03200
- SLC to Brander Matthews, 8 December 1885 · Hartford, Conn · UCCL03328
- SLC to Brander Matthews, 26 July 1898 · Kaltenleutgeben, Austria · UCCL05414
- SLC to Brander Matthews, 11 July 1900 · London, England · UCCL08824
- SLC to Brander Matthews, 25 July 1900 · London, England · UCCL05838
- SLC to Brander Matthews, 14 August 1900 · London, England · UCCL05850
- SLC to Brander Matthews, 2 November 1900 · New York, N.Y · UCCL05896
- SLC to Brander Matthews, 6 November 1900 · New York, N.Y · UCCL05897
- SLC to Brander Matthews, 21 February 1901 · New York, N.Y · UCCL06008
- SLC to Brander Matthews, 1901, New York, N.Y · UCCL05947
- SLC to Brander Matthews, 7 January 1902 · Riverdale, N.Y · UCCL06223
- SLC to Brander Matthews, 3 November 1902, inscription in <i>The Man that Corrupted Hadleyburg, and Other Stories and Essays</i> (1902) · UCCL13630
- SLC to Brander Matthews, 3 November 1902 · Unknown place · UCCL13592
- SLC to Brander Matthews, 4 May 1903 · Riverdale, N.Y · UCCL06644
- SLC to Brander Matthews, 8 May 1903 · Riverdale, N.Y · UCCL06651
- SLC to Brander Matthews, 21 June 1904 · Florence, Italy · UCCL07587
- SLC to Brander Matthews, 23 May 1905 · Dublin, N.H · UCCL07038
- SLC to Brander Matthews, 24 June 1906 · Dublin, N.H · UCCL07467
- SLC to Brander Matthews, 3 October 1906 · Dublin, N.H · UCCL07536
- SLC per Isabel V. Lyon to Brander Matthews, 13–19 February 1907 · New York, N.Y · UCCL12524
- SLC per Isabel V. Lyon to Brander Matthews, 1 March 1907 · New York, N.Y · UCCL07667
- SLC to Brander Matthews, Unknown date, New York, N.Y · UCCL07907
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