Sources: NmA2
- SLC to George Standring, 25 August 1886 · Elmira, N.Y · UCCL03445 NmA2
- SLC to George Daulton, 21 July 1903 · Elmira, N.Y · UCCL06706 NmA2, TxHuT
- SLC per Isabel V. Lyon to Archibald Henderson, 14 January 1909 · Redding, Conn · UCCL08313 NmA2
- Ralph W. Ashcroft for SLC, Isabel V. Lyon to Archibald Henderson, 13 February 1909 · Redding, Conn · UCCL08347 NmA2
- Ralph W. Ashcroft for SLC to Archibald Henderson, 16 February 1909 · Redding, Conn · UCCL08350 NmA2
- SLC per Ralph W. Ashcroft to Archibald Henderson, 21 February 1909 · Redding, Conn · UCCL08353 NmA2
- SLC per Albert Bigelow Paine to Archibald Henderson, 9 September 1909 · Redding, Conn · UCCL08449 NmA2
- SLC per Albert Bigelow Paine to Archibald Henderson, 20 September 1909 · Redding, Conn · UCCL08455 NmA2
- SLC per Albert Bigelow Paine to Archibald Henderson, 18 October 1909 · Redding, Conn · UCCL08471 NmA2
- Albert Bigelow Paine for SLC to Archibald Henderson, 15 November 1909 · Redding, Conn · UCCL08492 NmA2
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