Senders: Doubleday, Neltje De G.
- Neltje de G. Doubleday to SLC, 12 January 1907 · SS Cedric · UCLC35834 CU-MARK
- Neltje de G. Doubleday to SLC, 23 August 1907 · Mill Neck, N.Y. · UCLC37169 CU-MARK
- Neltje De G. Doubleday to SLC, 1 February 1908, New York, N.Y. · UCLC38932 CU-MARK
- Neltje de G. Doubleday to SLC, 7 December 1908 · New York, N.Y. · UCLC38416 CU-MARK
1