Sources: MiK2
- SLC to Marjorie Breckenridge, 19 September 1908 · New York, N.Y · UCCL07980
- SLC to Marjorie Breckenridge, 7 October 1908 · Redding, Conn · UCCL08126
- SLC to Marjorie Breckenridge, 1 December 1908 · Redding, Conn · UCCL08167
- SLC to Marjorie Breckenridge, 26 May 1909 · Redding, Conn · UCCL08402
- SLC to Marjorie Breckenridge, September 1909 · Redding, Conn · UCCL08690
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