Senders: Sloane, William M.
- William M. Sloane to SLC, 5 May 1891 · Princeton, N.J. · UCLC45553 CU-MARK
- William M. Sloane to SLC, 29 July 1901 · UCLC34859 00105:
- William M. Sloane to SLC, 30 August 1902 · Northeast Harbor, Maine · UCLC33528 CU-MARK
- William M. Sloane to SLC, February 1903 · New York, N.Y. · UCLC40094 CU-MARK
- William M. Sloane to SLC, 11 July 1904 · Princeton, N.J. · UCLC34129 CU-MARK
- William M. and Mary Sloane to SLC, 24 December 1909 · New York, N.Y. · UCLC40409 CU-MARK
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