Sources: LaBrUHM
- SLC to Grace E. King, 12 and 13 September 1888 · Elmira, N.Y · UCCL03760 CPlh2, LaBrUHM
- SLC to Grace E. King, 24 October 1888 · New York, N.Y · UCCL03794 CPlh2, LaBrUHM
- SLC to Grace E. King, 16 November 1888 · Hartford, Conn · UCCL03833 CPlh2, LaBrUHM
- OLC and SLC to Grace E. King, 4 December 1888 · Hartford, Conn · UCCL03799 CPlh2, LaBrUHM
- SLC to Grace E. King, after 26 December 1909 · Redding, Conn · UCCL06962 CPlh2, LaBrUHM
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