Addressees: Unaddressed
- SLC to \"Unaddressed,\" 22 February 1883 · Hartford, Conn · UCCL02349
- SLC to Unaddressed, February 1901 · Unknown place · UCCL09078
- SLC to Unaddressed, November 1901 · Riverdale, N.Y · UCCL08701
- SLC to Unaddressed, 13 September 1907 · Tuxedo Park, N.Y · UCCL12854
- SLC to Unaddressed, November 1907 · New York, N.Y · UCCL12663
- SLC to Unaddressed, October–December 1910 · Unknown place · UCCL12577
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