Sources: MdBE
- SLC to Richard Malcolm Johnston, 5 April 1887 · Hartford, Conn · UCCL03556
- SLC to Richard Malcolm Johnston, 9 November 1888 · Hartford, Conn · UCCL03830
- SLC to Richard Malcolm Johnston, 4 January 1889 · Hartford, Conn · UCCL03846
- SLC to Richard Malcolm Johnston, 9 January 1889 · Hartford, Conn · UCCL03848
- SLC to Richard Malcolm Johnston, 11 January 1889 · Hartford, Conn · UCCL03851
- SLC to Richard Malcolm Johnston, 12 July 1889 · Hartford, Conn · UCCL03910
- SLC to Unidentified, Unknown date · Unknown place · UCCL09039
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