Sources: DSI-AAA
- SLC to F. Hopkinson Smith, 6 April 1883 · Hartford, Conn · UCCL13572
- SLC to Unidentified, 4 March 1887 · Hartford, Conn · UCCL03535
- SLC to Elizabeth M. Millet, 1 February 1894 · New York, N.Y · UCCL11500
- SLC to Abbott H. Thayer, 27 June 1901 · Saranac Lake, N.Y · UCCL13137
- SLC to Abbott H. Thayer, 23 February 1905 · New York, N.Y · UCCL13138
- Jean Clemens to Nancy D. Brush, 2 January 1908 · Katonah, N.Y · UCCL07910
- Jean Clemens to Nancy D. Brush, 6 January 1908 · Greenwich, Conn · UCCL07909
- Jean Clemens to Nancy D. Brush, 16 January 1908 · Greenwich, Conn · UCCL07628
- Jean Clemens to Nancy D. Brush, 29 January 1908 · Greenwich, Conn · UCCL07927
- Jean Clemens to Nancy D. Brush, 9 February 1908 · Greenwich, Conn · UCCL07933
- Jean Clemens to Nancy D. Brush, 17 February 1908 · Greenwich, Conn · UCCL07940
- Jean Clemens to Robert Pearmain, 20 February 1908 · Greenwich, Conn · UCCL07942
- Jean Clemens to Nancy D. Brush, 23 February 1908 · Greenwich, Conn · UCCL07947
- Jean Clemens to Nancy D. Brush, 2 March 1908 · Greenwich, Conn · UCCL07955
- Jean Clemens to Nancy D. Brush, 10 March 1908 · Greenwich, Conn · UCCL07959
- Jean Clemens to Nancy D. Brush, 29 March 1908 · Greenwich, Conn · UCCL07966
- Jean Clemens to Nancy D. Brush, 5 April 1908 · Greenwich, Conn · UCCL07970
- Jean Clemens to Robert Pearmain, 9 April 1908 · Greenwich, Conn · UCCL07971
- Jean Clemens to Nancy D. Brush, 15 April 1908 · Greenwich, Conn · UCCL07976
- Jean Clemens to Nancy D. Brush, 26 April 1908 · Greenwich, Conn · UCCL07986
- Jean Clemens to Nancy D. Brush, 6 May 1908 · Greenwich, Conn · UCCL07992
- Jean Clemens to Nancy D. Brush, 20 May 1908 · Gloucester, Mass · UCCL08002
- Jean Clemens to Mittie Taylor Brush, 20 May 1908 · Gloucester, Mass · UCCL12076
- SLC to George de Forest Brush, 22 May 1908 · New York, N.Y · UCCL11340
- SLC to Abbott H. Thayer, 16 September 1909 · Redding, Conn · UCCL13136
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