Sources: BmuHA
- SLC to Helen S. Allen, 19 May 1908 · New York, N.Y · UCCL11784 BmuHA
- SLC to Helen S. Allen, 2 June 1908 · New York, N.Y · UCCL11783 BmuHA
- SLC to Helen S. Allen, 13 August 1908 · Redding, Conn · UCCL11334 BmuHA
- SLC to Helen S. Allen, 7 October 1908 · Redding, Conn · UCCL11782 BmuHA
- SLC to Helen S. Allen, 10 September 1909 · Redding, Conn · UCCL11796 BmuHA
- SLC to Helen S. Allen, 21 September 1909 · Redding, Conn · UCCL11781 BmuHA
- SLC to Helen S. Allen, 1 October 1909 · Redding, Conn · UCCL11785 BmuHA
- SLC to Helen S. Allen, 7 October 1909 · Redding, Conn · UCCL11829 BmuHA
- SLC to Helen S. Allen, 7 October 1909 · Redding, Conn · UCCL11697 BmuHA
- SLC to Helen S. Allen, 12 October 1909 · Redding, Conn · UCCL11786 BmuHA
- SLC to Helen S. Allen, 30 October 1909 · Redding, Conn · UCCL11787 BmuHA
- SLC to Helen S. Allen, 18 December–20 December 1909 · SS Bermudian · UCCL11780 BmuHA
- SLC to Marion S. Allen, 19 December 1909 · SS Bermudian · UCCL11779 BmuHA
- SLC to William H. Allen, 22 December 1909 · Redding, Conn · UCCL11793 BmuHA
- Albert B. Paine for SLC to William H. Allen, 3 January 1910 · Redding, Connecticut · UCCL13056 BmuHA
- Albert Bigelow Paine for SLC to William H. Allen per Telegraph Operator, 5 January 1910 · New York, New York · UCCL13057 BmuHA
- SLC to Helen S. Allen, 14 February 1910 · Hamilton, Bermuda · UCCL11111 BmuHA
- SLC to Barnum & Bailey, 3 April 1910 · Hamilton, Bermuda · UCCL11112 BmuHA
1