Sources: IaCrM
- SLC to J. H. Pottenger, 25 March 1868 · Unknown place · UCCL10666
- SLC per Franklin G. Whitmore to Theodore S. Parvin, 18 March 1890 · Hartford, Conn · UCCL00594
- SLC to Mary E. (Mollie) Clemens, 11 December 1897 · Vienna, Austria · UCCL05320
- SLC to Mollie Clemens, 16 May 1898 · Vienna, Austria · UCCL11916
- SLC to Theodore Sutton Parvin, 1 September n.y. · Elmira, N.Y · UCCL09041
1