Sources: NjR
- SLC to Theodore W. Stanton, 26 May 1898 · Kaltenleutgeben, Austria · UCCL05395 NjR
- SLC to Theodore W. Stanton, October 1901 · Riverdale, N.Y · UCCL06150 NjR
- SLC to Theodore W. Stanton, 9 December 1901 · Riverdale, N.Y · UCCL06186 NjR
- SLC to Theodore W. Stanton, 10 January 1902 · Riverdale, N.Y · UCCL06241 NjR
- SLC to Theodore W. Stanton, 1 October 1902 · York Harbor, Me · UCCL06451 NjR
- SLC to Theodore W. Stanton, 18 October 1902 · Riverdale, N.Y · UCCL06467 NjR
- SLC per Isabel V. Lyon to Theodore W. Stanton, 14 January 1903 · Riverdale, N.Y · UCCL06562 NjR
- SLC to Theodore W. Stanton, 21 June 1904 · Florence, Italy · UCCL06851 NjR
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