Addressees: Gilder, Helena
- SLC to Helena Gilder, 17 February 1894 · New York, N.Y · UCCL12055
- OLC to Helena Gilder, 10 February 1901 · New York, N.Y · UCCL12066
- OLC to Helena Gilder, 10 August 1903 · Elmira, N.Y · UCCL12057
- Clara L. Clemens to Helena Gilder, 20 June–24 June 1904 · Florence, Italy · UCCL12060
- SLC to Helena Gilder, 28 July 1905 · Dublin, N.H · UCCL12056
- SLC to Helena Gilder, 11 February 1908 · New York, N.Y · UCCL12063
- SLC to Richard Watson Gilder and Helena Gilder, 7 October–13 October 1909 · Redding, Conn · UCCL12065
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